STOCK PURCHASE AGREEMENT BY AND BETWEEN SPAR AEROSPACE LIMITED AND RADYNE CORP. AUGUST 28, 1998 TABLE OF CONTENTS

[EXECUTION COPY]

Exhibit 2.1

STOCK PURCHASE AGREEMENT

BY AND BETWEEN

SPAR AEROSPACE LIMITED

AND

RADYNE CORP.

AUGUST 28, 1998

TABLE OF CONTENTS

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ARTICLE I. DEFINITIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.1. Certain Defined Terms . . . . . . . . . . . . . . . . . . . . . . . 1
1.2. Other Definitional Provisions . . . . . . . . . . . . . . . . . . . 6

ARTICLE II. TRANSFER OF SHARES. . . . . . . . . . . . . . . . . . . . . . . . 6

2.1. Purchase and Sale of the Shares . . . . . . . . . . . . . . . . . . 6
2.2. Closing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3. Deliveries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

ARTICLE III. REPRESENTATIONS AND WARRANTIES OF SPAR . . . . . . . . . . . . . 7

3.1. Organization; Standing and Authority of Spar. . . . . . . . . . . . 7
3.2. Organization; Standing and Authority of Holdings. . . . . . . . . . 7
3.3. Organization; Standing and Authority of the Subsidiaries. . . . . . 8
3.4. The Shares. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.5. The Subsidiary Shares . . . . . . . . . . . . . . . . . . . . . . . 8
3.6. Capital Stock of Holdings . . . . . . . . . . . . . . . . . . . . . 8
3.7. Capital Stock of the Subsidiaries . . . . . . . . . . . . . . . . . 9
3.8. Equity Interests. . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.9. No Breach or Default; Consents and Approvals. . . . . . . . . . . . 9
3.10. Financial Statements; Undisclosed Liabilities. . . . . . . . . . .10
3.11. Inventories. . . . . . . . . . . . . . . . . . . . . . . . . . . .10
3.12. Accounts Receivable. . . . . . . . . . . . . . . . . . . . . . . .10
3.13. Absence of Certain Changes or Events . . . . . . . . . . . . . . .11
3.14. Taxes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
3.15. Assets Other than Real Property Interests. . . . . . . . . . . . .13
3.16. Real Property. . . . . . . . . . . . . . . . . . . . . . . . . . .13
3.17. Patents, Marks, Trade Names, Copyrights and Registrations. . . . .14
3.18. Material Contracts . . . . . . . . . . . . . . . . . . . . . . . .15
3.19. Litigation . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
3.20. Employee Benefit Plan. . . . . . . . . . . . . . . . . . . . . . .15
3.21. ERISA Plans. . . . . . . . . . . . . . . . . . . . . . . . . . . .16
3.22. Employee and Labor Relations . . . . . . . . . . . . . . . . . . .16
3.23. Compliance with Applicable Laws. . . . . . . . . . . . . . . . . .17
3.24. Environmental Matters. . . . . . . . . . . . . . . . . . . . . . .17
3.25. Minute Books and Stock Records . . . . . . . . . . . . . . . . . .17
3.26. Warranty Work and Products Liability . . . . . . . . . . . . . . .17
3.27. Absence of Certain Commercial Practices. . . . . . . . . . . . . .18

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3.28. Potential Conflicts of Interest. . . . . . . . . . . . . . . . . .18
3.29. Bank Accounts. . . . . . . . . . . . . . . . . . . . . . . . . . .18
3.30. Suppliers and Customers. . . . . . . . . . . . . . . . . . . . . .18
3.31. Accuracy of Information. . . . . . . . . . . . . . . . . . . . . .18
3.32. Investment . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
3.33. Securities Not Registered. . . . . . . . . . . . . . . . . . . . .18
3.34. Accredited Investor. . . . . . . . . . . . . . . . . . . . . . . .19
3.35. SEC Disclosure Forms . . . . . . . . . . . . . . . . . . . . . . .19

ARTICLE IV. REPRESENTATIONS AND WARRANTIES OF BUYER . . . . . . . . . . . . .19

4.1. Organization; Standing and Authority of Buyer . . . . . . . . . . .19
4.2. No Breach or Default; Consents and Approvals. . . . . . . . . . . .19
4.3. Investment Interest; Accredited Investor; Risk. . . . . . . . . . .20
4.4. Availability of Funds . . . . . . . . . . . . . . . . . . . . . . .20
4.5. Buyer's Acknowledgment. . . . . . . . . . . . . . . . . . . . . . .20
4.6. Capital Stock of Buyer. . . . . . . . . . . . . . . . . . . . . . .20
4.7. Accuracy of Information . . . . . . . . . . . . . . . . . . . . . .21
4.8. Absence of Certain Changes or Events. . . . . . . . . . . . . . . .21
4.9. Suppliers and Customers.. . . . . . . . . . . . . . . . . . . . . .21

ARTICLE V. MUTUAL COVENANTS . . . . . . . . . . . . . . . . . . . . . . . . .22

5.1. Consents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
5.2. Publicity . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
5.3. Governmental Filings. . . . . . . . . . . . . . . . . . . . . . . .22
5.4. Records . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
5.5. Sequence Lease. . . . . . . . . . . . . . . . . . . . . . . . . . .23
5.6. Transition Plan . . . . . . . . . . . . . . . . . . . . . . . . . .23

ARTICLE VI. COVENANTS OF SPAR . . . . . . . . . . . . . . . . . . . . . . . .24

6.1. Access. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
6.2. Interim Operations. . . . . . . . . . . . . . . . . . . . . . . . .24
6.3. Insurance . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
6.4. Resignations; Use of ComStream Name . . . . . . . . . . . . . . . .25
6.5. Intercompany Payables; Other Amounts. . . . . . . . . . . . . . . .26

ARTICLE VII. COVENANTS OF BUYER . . . . . . . . . . . . . . . . . . . . . . .26

7.1. Confidentiality . . . . . . . . . . . . . . . . . . . . . . . . . .26
7.2. Intercompany Payables; Other Amounts. . . . . . . . . . . . . . . .26
7.3. Capital Structure.. . . . . . . . . . . . . . . . . . . . . . . . .26

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ARTICLE VIII. CONDITIONS PRECEDENT TO CLOSING . . . . . . . . . . . . . . . .27

8.1. Mutual Conditions . . . . . . . . . . . . . . . . . . . . . . . . .27
8.2. Buyer's Conditions. . . . . . . . . . . . . . . . . . . . . . . . .27
8.3. Spar's Conditions . . . . . . . . . . . . . . . . . . . . . . . . .29

ARTICLE IX EMPLOYEE BENEFIT MATTERS . . . . . . . . . . . . . . . . . . . . .30

9.1. Employment. . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
9.2. Benefits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

ARTICLE X. INDEMNIFICATION. . . . . . . . . . . . . . . . . . . . . . . . . .32

10.1. Indemnification by Spar. . . . . . . . . . . . . . . . . . . . . .32
10.2. Indemnification by Buyer; Recoveries . . . . . . . . . . . . . . .32
10.3. Tax Indemnification. . . . . . . . . . . . . . . . . . . . . . . .33
10.4. Losses Net of Insurance, etc . . . . . . . . . . . . . . . . . . .34
10.5. Procedures Relating to Indemnification (Other than Under
Section 10.3). . . . . . . . . . . . . . . . . . . . . . . . . . .35
10.6. Survival of Representations; Termination of Indemnification. . . .36

ARTICLE XI. COVENANT NOT TO COMPETE . . . . . . . . . . . . . . . . . . . . .37

11.1. Covenant Not to Compete. . . . . . . . . . . . . . . . . . . . . .37
11.2. Consideration. . . . . . . . . . . . . . . . . . . . . . . . . . .37
11.3. Reasonableness of Covenant . . . . . . . . . . . . . . . . . . . .37
11.4. Separate Covenants . . . . . . . . . . . . . . . . . . . . . . . .37
11.5. Equitable Relief . . . . . . . . . . . . . . . . . . . . . . . . .37

ARTICLE XII. CERTAIN CLOSING AND POST-CLOSING MATTERS . . . . . . . . . . . .38

12.1. Tax Matters. . . . . . . . . . . . . . . . . . . . . . . . . . . .38
12.2. Access to Former Business Records. . . . . . . . . . . . . . . . .39

ARTICLE XIII. TERMINATION . . . . . . . . . . . . . . . . . . . . . . . . . .39

13.1. Termination. . . . . . . . . . . . . . . . . . . . . . . . . . . .39
13.2. Notice of Termination. . . . . . . . . . . . . . . . . . . . . . .40
13.3. Effect of Termination. . . . . . . . . . . . . . . . . . . . . . .40

ARTICLE XIV. GENERAL PROVISIONS . . . . . . . . . . . . . . . . . . . . . . .40

14.1. Notices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
14.2. Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
14.3. No Third-Party Beneficiaries . . . . . . . . . . . . . . . . . . .41

iii

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14.4. Expenses . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
14.5. Attorneys' Fees. . . . . . . . . . . . . . . . . . . . . . . . . .42
14.6. Amendments . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
14.7. Interpretation; Exhibits and Schedules . . . . . . . . . . . . . .42
14.8. Counterparts . . . . . . . . . . . . . . . . . . . . . . . . . . .42
14.9. Entire Agreement . . . . . . . . . . . . . . . . . . . . . . . . .42
14.10. Finders and Brokers . . . . . . . . . . . . . . . . . . . . . . .42
14.11. Severability. . . . . . . . . . . . . . . . . . . . . . . . . . .43
14.12. Governing Law . . . . . . . . . . . . . . . . . . . . . . . . . .43
14.13. Consent to Jurisdiction: Forum Selection. . . . . . . . . . . . .43
14.14. Jury Waiver . . . . . . . . . . . . . . . . . . . . . . . . . . .43

EXHIBITS

Exhibit A Convertible Promissory Note

SCHEDULES

Schedule 1.1 Officers and Key Employees for Knowledge Definition
Schedule 3.4 Restrictions on Holdings Shares and Subsidiaries Shares
Schedule 3.6 Capital Stock of Holdings
Schedule 3.9 No Breach or Default; Consents and Approvals
Schedule 3.10 Exceptions to Financial Statements
Schedule 3.13 Certain Changes
Schedule 3.14 Taxes
Schedule 3.15 Liens
Schedule 3.16 Leasehold Interests
Schedule 3.17 Intellectual Property
Schedule 3.18 Material Contracts
Schedule 3.19 Material Litigation
Schedule 3.20 Employee Benefit Plans
Schedule 3.22 Employee and Labor Relations
Schedule 3.26 Defect Claims
Schedule 3.28 Conflicts of Interest
Schedule 3.29 Bank Accounts
Schedule 3.30 Suppliers and Customers of the Company
Schedule 4.2 No Breach or Default; Consents and Approvals
Schedule 4.6 Capital Stock of Buyer
Schedule 4.7 Certain Changes of Buyer
Schedule 4.9 Suppliers and Customers of the Buyer
Schedule 6.3 Insurance Policies Maintained by the Company
Schedule 8.3 Exceptions to Spar's Conditions

STOCK PURCHASE AGREEMENT

This Stock Purchase Agreement ("Agreement") is made and entered into
as of August 28, 1998 by and between Spar Aerospace Limited, a Canadian
corporation ("Spar"), and Radyne Corp., a New York corporation ("Buyer"), for
the purchase and sale of all of the outstanding capital stock of ComStream
Holdings, Inc., a Delaware corporation (referred to herein as "Holdings" or as
the "Company" when included with its subsidiaries).

BACKGROUND FACTS

Holdings is engaged in the communications equipment business and is a
wholly-owned subsidiary of Spar.

Spar desires to sell to Buyer and Buyer desires to purchase all of the
issued and outstanding shares of Holdings, consisting of 20,000,000 shares of
Common Stock, par value $.001 per share and 100 shares of Preferred Stock, par
value $.001 per share (the "Shares").

NOW, THEREFORE, in consideration of the foregoing recitals and the
representations, warranties and covenants hereinafter set forth, the parties
hereto hereby agree as follows:

ARTICLE I

DEFINITIONS

1.1 CERTAIN DEFINED TERMS. As used in this Agreement, the
following terms shall have the following meanings (such meanings to be equally
applicable to both the singular and plural forms of the terms defined):

"Affiliate" shall have the meaning ascribed to such term in Rule 12b-2
promulgated under the Exchange Act by the SEC, as in effect on the date hereof.

"Apportioned Short Period" shall have the meaning set forth in
Section 10.3(b).

"Balance Sheet" shall have the meaning set forth in Section 3.10.

"Business Day" means a day other than a Saturday or a Sunday or other
day on which commercial banks in Toronto, Ontario, Phoenix, Arizona or
Los Angeles, California, are authorized or required by law to close.

"Buyer's SEC Reports" shall have the meaning set forth in
Section 3.35.

"Closing" shall have the meaning set forth in Section 2.2.

"Closing Date" means the day on which the Closing occurs pursuant to
Section 2.2.

"Code" means the Internal Revenue Code of 1986, as amended from time
to time.

"Company" means Holdings and its subsidiaries.

"Company Employee" has the meaning set forth in Section 9.1(a).

"Company Plan(s)" means each and all Employee Benefit Plans and
Employee Benefit Arrangements sponsored or maintained by the Company under which
any Company Employee participates or is entitled to receive benefits.

"ComStream" means ComStream Corporation, a Delaware corporation and
wholly-owned subsidiary of Holdings.

"Confidentiality Agreement" shall have the meaning set forth in
Section 7.1.

"Contract" means any contract, agreement, license, lease, sales or
purchase order or other legally binding commitment, whether written or oral.

"Contractual Obligation" means, as to a Person, any provision of any
note, bond or security issued by such Person or of any mortgage, indenture, deed
of trust, franchise, Contract, instrument or undertaking to which such Person is
a party or by which it or any of its property or assets is subject.

"DOJ" shall have the meaning set forth in Section 5.3.

"Employee Benefit Arrangements" means each and all pension,
supplemental pension, accidental death and dismemberment, life and health
insurance and benefits (including medical, dental, vision and hospitalization),
short- and long-term disability, savings, bonus, deferred compensation,
incentive compensation, holiday, vacation, severance pay, salary continuation,
sick pay, sick leave, tuition refund, service award, company car, scholarship,
relocation, patent award, fringe benefit, flexible spending account programs and
other employee benefit plans, contracts or policies providing employee or
executive compensation or benefits to Company Employees, other than the Employee
Benefit Plans.

"Employee Benefit Plans" means each and all "employee benefit plans,"
as defined in Section 3(3) of ERISA, maintained or contributed to by the Company
or in which the Company participates or participated and which provides benefits
to Company Employees, including (i) any such plans that are "employee welfare
benefit plans" as

defined in Section 3(1) of ERISA and (ii) any such plans that are "employee
pension benefit plans" as defined in Section 3(2) of ERISA.

"Environmental Law" means the Comprehensive Environmental Response,
Compensation and Liability Act of 1980, as amended, the Resource Conservation
and Recovery Act of 1976, as amended, and any applicable statutes, regulations,
rules, ordinances, codes, licenses, permits, orders, approvals, plans,
authorizations, concessions, franchises and similar items of all Governmental
Authorities and all applicable judicial, administrative and regulatory decrees,
judgments and orders, any of which relate to the protection of human health or
the environment from the effects of Hazardous Materials, including, but not
limited to, those pertaining to reporting, licensing, permitting, investigating
and remediating emissions, discharges, releases or threatened releases of
Hazardous Materials into the air, surface water, groundwater or land, or relate
to the manufacture, processing, distribution, use, treatment, storage, disposal,
transport or handling of Hazardous Materials.

"ERISA" means the Employee Retirement Income Security Act of 1974, as
amended from time to time.

"Exchange Act" means the Securities Exchange Act of 1934, as amended
from time to time, and the rules and regulations of the SEC promulgated from
time to time thereunder.

"Exon-▇▇▇▇▇▇ Act" means the Trade Act of 1988, Pub.L. 100-418, 102
stat. 1107 (August 23, 1988), as amended.

"Financial Statements" shall have the meaning set forth in
Section 3.10(a).

"FTC" shall have the meaning set forth in Section 5.3.

"GAAP" means generally accepted accounting principles in the United
States of America as applied by the Company on a consistent basis from period to
period.

"Governmental Authority" means any nation or government, any state or
other political subdivision thereof and any entity exercising executive,
legislative, judicial, regulatory or administrative functions of or pertaining
to government.

"Hazardous Material" means any substance: (i) that is defined as a
hazardous waste, hazardous substance, pollutant or contaminant under any
Environmental Law; (ii) that is toxic, explosive, corrosive, flammable,
infectious, radioactive, carcinogenic, mutagenic or otherwise hazardous and is
regulated by any Governmental Authority; or (iii) that contains gasoline, diesel
fuel or other petroleum hydrocarbons.

"Holdings" means ComStream Holdings, Inc., a Delaware corporation.

"HSR Act" means the ▇▇▇▇-▇▇▇▇▇-▇▇▇▇▇▇ Antitrust Improvements Act of
1976, as amended from time to time.

"Indemnified Person" means any Person entitled to seek indemnification
hereunder.

"Indemnifying Person" means any Person from whom indemnification is
being sought hereunder.

"Interim Date" shall have the meaning set forth in Section 3.13.

"IRS" means the United States Internal Revenue Service.

"Knowledge of Spar" with reference to any of the representations and
warranties of Spar means the actual knowledge of any individual listed on
Schedule 1.1 hereto.

"Leased Property" has the meaning set forth in Section 3.16.

"Lien" means any mortgage, pledge, hypothecation, assignment,
encumbrance, lien (statutory or other) or other security agreement of any kind
or nature whatsoever (including, without limitation, any conditional sale or
other title retention agreement or any financing lease having substantially the
same economic effect as any of the foregoing).

"Loss" means any loss, liability, claim, damage or expense net of any
related recoveries (including reasonable attorneys' fees and disbursements and
the costs of investigation).

"Material Adverse Effect" means a material adverse effect on (a) the
business, operations, property or condition (financial or other) of the Company
or (b) the ability of Spar to consummate the transactions contemplated by this
Agreement.

"Permitted Lien" means (a) mechanics', carriers', workmen's,
repairmen's or other like Liens arising or incurred in the ordinary course of
business, (b) Liens arising under original purchase price conditional sales
contracts and equipment leases with third parties entered into in the ordinary
course of business, (c) Liens for Taxes and other governmental charges which are
not due and payable or which may thereafter be paid without penalty, and
(d) other imperfections of title, restrictions or encumbrances, if any, which
Liens, imperfections of title, restrictions or other encumbrances do not,
individually or in the aggregate, materially impair the continued use and
operation or marketability of the specific assets to which they relate.

"Person" means an individual, partnership, corporation, limited
liability company, business trust, joint stock company, trust, unincorporated
association, joint venture, Governmental Authority or other entity of whatever
nature.

"Pre-Closing Tax Period" shall have the meaning set forth in
Section 10.3(b).

"Purchase Price" has the meaning set forth in Section 2.1.

"Records" means all of the ledgers, journals, bookkeeping memoranda,
account cards, reports, computer listings, indexes, stored computer data,
customer files, credit files, magnetic media, collateral records and all other
correspondence, memoranda and records, including Federal, state and local Tax
Returns of the Company.

"Requirement of Law" means, as to any Person, the Certificate or
Articles of Incorporation and Bylaws or other organizational or governing
documents of such Person, and any law, treaty, rule or regulation or
determination of an arbitrator or a court or other Governmental Authority, in
each case applicable to or binding upon such Person or any of its property or to
which such Person or any of its property is subject.

"Restricted Territory" shall have the meaning set forth in
Section 11.1.

"Securities Act" means the Securities Act of 1933, as amended from
time to time, and the rules and regulations of the SEC promulgated from time to
time thereunder.

"SEC" means the Securities and Exchange Commission.

"Shares" is defined in the recitals hereto.

"Short Period" shall have the meaning set forth in Section 10.3(b).

"Subsidiary" and "Subsidiaries" means the direct and indirect
subsidiaries of Holdings listed on Schedule 3.4.

"Subsidiary Shares" means all of the issued and outstanding shares of
the Subsidiaries.

"Tax" or "Taxes" means all federal, state, local, foreign or other
taxes, including net income, alternative minimum or add-on minimum tax, gross
income, unitary, gross receipts, sales, use, intangible, ad valorem, franchise,
profits, license, withholding on amounts paid to or by the Company, payroll,
employment, excise, severance, stamp, transfer, occupation, premium, property or
environmental windfall profit tax, custom, duty or other tax, governmental fee
or other like assessment or charge of any kind whatsoever, together with any
interest or penalty, addition to tax or additional amount imposed by any
jurisdiction or other Governmental Authority (federal, state, local or foreign)
on the Company.

"Tax Claim" shall have the meaning set forth in Section 10.3(d).

"Tax Indemnitee" shall have the meaning set forth in Section 10.3(d).

"Tax Indemnitor" shall have the meaning set forth in Section 10.3(d).

"Tax Returns" means all returns or material reports or forms required
to be filed with a Governmental Authority with respect to Tax.

"Third Party Claim" shall have the meaning set forth in
Section 10.5(a).

"Transition Plan" shall have the meaning set forth in Section 5.6
hereof.

"WARN Act" means the Worker Adjustment and Retraining Notification Act
of 1988, as amended from time to time.

1.2 OTHER DEFINITIONAL PROVISIONS.

(a) Terms defined in this Agreement in Sections other than
Section 1.1 shall have the meanings as so defined when used in this Agreement.

(b) Unless express reference is made to Business Days,
references to days shall be to calendar days.

ARTICLE II

TRANSFER OF SHARES

2.1 PURCHASE AND SALE OF THE SHARES. On the terms and subject to
the conditions of this Agreement, Spar will sell, transfer and deliver the
Shares to Buyer, and Buyer will purchase the Shares from Spar, for a total
purchase price of Seventeen Million Dollars ($17,000,000.00) ("Purchase Price"),
payable at the time and in accordance with the terms set forth in Section 2.3.

2.2 CLOSING. The closing ("Closing") of the purchase and sale of
the Shares shall be held at the offices of ▇▇▇▇▇▇, ▇▇▇▇ & ▇▇▇▇▇▇▇▇ LLP, Jamboree
Center, ▇ ▇▇▇▇ ▇▇▇▇▇, ▇▇▇▇▇▇, ▇▇▇▇▇▇▇▇▇▇, at 10:00 a.m. on September 30, 1998,
or if the conditions to Closing set forth in Article VIII shall not have been
satisfied or waived by such date, subject to the termination rights set forth in
Article XIII, as soon as practicable after such conditions shall have been
satisfied or waived. The date on which the Closing shall occur is hereinafter
referred to as the "Closing Date."

2.3 DELIVERIES. At the Closing, Buyer shall deliver to Spar by
wire transfer (to a bank account designated at least three Business Days prior
to the Closing Date in writing by Spar) immediately available funds in an amount
equal to Ten Million Dollars ($10,000,000.00) and a convertible promissory note
(the "Convertible Note") in the form attached hereto as Exhibit A in an amount
equal to Seven Million Dollars ($7,000,000.00). At the Closing, Spar shall
deliver or cause to be delivered to Buyer certificates representing the Shares,
duly endorsed in blank or accompanied by stock powers duly endorsed in blank in
proper form for transfer, with appropriate transfer

stamps, if any, affixed thereto. In addition, at the Closing Buyer and Spar
shall deliver to and receive from each other all documents required to be
delivered and received pursuant to Article VIII hereof.

ARTICLE III

REPRESENTATIONS AND WARRANTIES OF SPAR

Spar hereby represents and warrants to Buyer as follows:

3.1 ORGANIZATION; STANDING AND AUTHORITY OF SPAR. Spar is a
corporation duly organized, validly existing and in good standing under the laws
of Canada. Spar has all requisite corporate power and authority to enter into
this Agreement and to consummate the transactions contemplated hereby. All
corporate acts and other proceedings required to be taken by Spar to authorize
the execution, delivery and performance of this Agreement and the consummation
of the transactions contemplated hereby have been duly taken. This Agreement
has been duly executed and delivered by Spar and constitutes a valid and binding
obligation of Spar, enforceable against Spar in accordance with its terms,
except as enforceability may be limited by bankruptcy, insolvency,
reorganization, moratorium and other similar laws relating to or affecting
creditors' rights generally or by general equitable principles (regardless of
whether such enforceability is considered in a proceeding in equity or at law).

3.2 ORGANIZATION; STANDING AND AUTHORITY OF HOLDINGS. Holdings is
a corporation duly organized and validly existing under the laws of the State of
Delaware. Holdings is duly qualified and in good standing to do business in
each jurisdiction in which the nature of its business or the ownership, leasing
or holding of its properties makes such qualification necessary, except such
jurisdictions where the failure to be so qualified or in good standing,
individually or in the aggregate, would not have a Material Adverse Effect.
Holdings has all requisite corporate power and authority and possesses all
governmental franchises, licenses, permits, authorizations and approvals
necessary to enable it to carry on its business as presently conducted other
than such franchises, licenses, permits, authorizations and approvals the lack
of which, individually or in the aggregate, would not have a Material Adverse
Effect. Spar has made available to Buyer (i) the Certificate of Incorporation,
as amended to date, and the Bylaws, as in effect on the date hereof, of Holdings
and (ii) the stock certificate and transfer books and the minute books of
Holdings.

3.3 ORGANIZATION; STANDING AND AUTHORITY OF THE SUBSIDIARIES. Each
Subsidiary listed on Schedule 3.4 is a corporation duly organized and validly
existing under the laws of its jurisdiction of incorporation. Each Subsidiary
is duly qualified and in good standing to do business in each jurisdiction in
which the nature of its business or the ownership, leasing or holding of its
properties makes such qualification necessary, except such jurisdictions where
the failure to be so qualified or in good standing, individually or in the
aggregate, would not have a Material Adverse Effect. Each

Subsidiary has all requisite corporate power and authority and possesses all
governmental franchises, licenses, permits, authorizations and approvals
necessary to enable it to carry on its business as presently conducted other
than such franchises, licenses, permits, authorizations and approvals the lack
of which, individually or in the aggregate, would not have a Material Adverse
Effect. Spar has made available to Buyer (i) the Certificate of Incorporation
(or similar charter document), as amended to date, and the Bylaws, as in effect
on the date hereof, of each Subsidiary and (ii) the stock certificate and
transfer books and the minute books of each Subsidiary.

3.4 THE SHARES. Except as set forth on Schedule 3.15, Spar has
good and valid title to the Shares, free and clear of any Liens and has full
power and authority to transfer good and valid title to the Shares free and
clear of any Liens. Assuming Buyer has the requisite power and authority to be
the lawful owner of the Shares, upon delivery to Buyer at the Closing of
certificates representing the Shares, duly endorsed by Spar for transfer to
Buyer, and upon Spar's receipt of the Purchase Price, good and valid title to
the Shares will pass to Buyer, free and clear of any Liens other than those
arising from acts of Buyer or its Affiliates. Other than this Agreement and
except as set forth on Schedule 3.4, the Shares are not subject to any voting
trust agreement or other Contractual Obligation restricting or otherwise
relating to the voting, dividend rights or disposition of the Shares. The
certificates representing the Shares to be delivered at Closing will constitute
all of the outstanding Shares.

3.5 THE SUBSIDIARY SHARES. Except as set forth on Schedule 3.15,
the Company has good and valid title to the Subsidiary Shares, free and clear of
all Liens. Other than this Agreement and except as set forth on Schedule 3.4,
the Subsidiary Shares are not subject to any voting trust agreement or other
Contractual Obligation restricting or otherwise relating to the voting, dividend
rights or disposition of the Subsidiary Shares. The certificates representing
the Subsidiary Shares to be delivered at Closing will constitute all of the
outstanding Subsidiary Shares.

3.6 CAPITAL STOCK OF HOLDINGS. The authorized capital stock of
Holdings consists of 8,000,000 shares of Preferred Stock, $.001 par value, and
100,000,000 shares of Common Stock, $.001 par value. The Shares were duly
authorized and validly issued and are outstanding, fully paid and nonassessable.
Except for the Shares, there are no shares of capital stock or other equity
securities of the Company outstanding. Spar is the record owner of the Shares.
The Shares have not been issued in violation of, and none of the Shares are
subject to, any preemptive or subscription rights. Except as set forth on
Schedule 3.6, there are no outstanding warrants, options, "phantom" stock
rights, agreements, convertible or exchangeable securities or other commitments
(other than this Agreement) pursuant to which Spar or Holdings is or may become
obligated to issue, sell, purchase, return or redeem any shares of capital stock
or other securities of Holdings, and no equity securities of the Company are
reserved for issuance for any purpose.

3.7 CAPITAL STOCK OF THE SUBSIDIARIES. The authorized capital
stock of each Subsidiary is as set forth on Schedule 3.4. The Subsidiary Shares
were duly authorized and validly issued and are outstanding, fully paid and
nonassessable. Except for the Subsidiary Shares, there are no shares of capital
stock or other equity securities of any Subsidiary outstanding. Holdings is the
record owner of the Subsidiary Shares. The Subsidiary Shares have not been
issued in violation of, and none of the Subsidiary Shares are subject to, any
preemptive or subscription rights. There are not outstanding warrants, options,
"phantom" stock rights, agreements, convertible or exchangeable securities or
other commitments (other than this Agreement) pursuant to which Spar or the
Company is or may become obligated to issue, sell, purchase, return or redeem
any shares of capital stock or other securities of any Subsidiary, and no equity
securities of the Subsidiaries are reserved for issuance for any purpose.

3.8 EQUITY INTERESTS. Other than its ownership of all the
outstanding capital stock of the Subsidiaries, Holdings does not directly or
indirectly own capital stock of or other equity interests in any Person. The
Subsidiaries do not directly or indirectly own capital stock of or other equity
interests in any Person.

3.9 NO BREACH OR DEFAULT; CONSENTS AND APPROVALS.

(a) Except as set forth in Schedule 3.9, the execution and
delivery by Spar of this Agreement and the other documents referenced herein to
which Spar is a party and the consummation of the transactions contemplated
hereby and thereby will not result in or constitute any of the following: (i) a
default or an event that, with the giving of notice or lapse of time, or both,
would be a default, breach or violation of the charter documents or bylaws of
Spar or Holdings or any material Contractual Obligation of the Company, (ii) an
event that would permit any party to terminate any material Company Contract or
to accelerate the maturity of any indebtedness or other material Contractual
Obligation of the Company, (iii) the creation or imposition of any Lien on any
of the properties of the Company, or (iv) a violation of any order, writ,
injunction, decree, statute, rule or regulation applicable to Spar or the
Company.

(b) Except as set forth in Schedule 3.9, no authorization,
consent or approval of any Governmental Authority or any third party is
necessary for the consummation by Spar of the transactions contemplated by this
Agreement and the other documents referenced herein to which Spar is a party.

3.10 FINANCIAL STATEMENTS; UNDISCLOSED LIABILITIES.

(a) Spar has delivered to Buyer the audited consolidated
balance sheets of the Company as of December 31, 1997 and 1996 and related
consolidated statements of operations, stockholder's equity (deficit) and cash
flows for the three years in the period ended December 31, 1997, and its
unaudited consolidated balance sheet ("Balance Sheet"), and unaudited
consolidated statements of operations and cash flows for the six months in the
period ended, June 30, 1998 ("Financial Statements"). The Financial Statements
have been prepared in accordance with GAAP

and fairly present the financial condition and results of operations of the
Company as of the respective dates thereof and for the respective periods
covered thereby. The unaudited interim financial statements have been prepared
in accordance with GAAP except in that they exclude substantially all notes and
related disclosures required under GAAP.

(b) Except as reflected on the Balance Sheet or disclosed
on Schedule 3.10, the Company does not have any material indebtedness,
obligations or liabilities other than (i) liabilities which have arisen in the
ordinary course of business since the date of the Balance Sheet, and (ii) those
liabilities otherwise disclosed on Schedule 3.10 or another Schedule to this
Agreement.

3.11 INVENTORIES. ComStream has good and marketable title to all of
the inventories reflected on the June 30, 1998 Balance Sheet or acquired
subsequent thereto (other than inventories disposed of in the ordinary course of
business), free and clear of all claims, liens, charges, encumbrances and rights
of third parties and no inventory is outstanding on consignment with any third
party. The inventory of Company and the Subsidiaries (including, without
limitation, finished goods, work-in-process, raw materials, parts and supplies)
reflected on the Balance Sheet is or was, prior to the sale thereof,
(i) purchased in the ordinary course of their businesses, (ii) has been carried
on the respective books of account of Company or the Subsidiaries at the lower
of cost or market on a consistent basis in accordance with generally accepted
accounting principles consistently applied and (iii) has been determined on a
first-in first-out inventory basis.

3.12 ACCOUNTS RECEIVABLE. Except for (i) cash discounts in the
ordinary course of business, (ii) product discounts as to which a liability
account is reflected on the books of ComStream, (iii) offsets to the extent that
amounts (including costs associated with such recovery) will be recovered by
ComStream from third parties, (iv) discounts taken for incorrect billing terms,
(v) bad debt reserves determined in accordance with GAAP, and (vi) offsets taken
with respect to products returned, all accounts, notes and other receivables of
ComStream arose in the ordinary course of business, and no entitlements to or
claims of offset or reduction in respect thereof have been made or are known to
ComStream.

3.13 ABSENCE OF CERTAIN CHANGES OR EVENTS. Except as set forth on
Schedule 3.13, since June 30, 1998 (the "Interim Date") neither Holdings nor any
Subsidiary has (a) paid or declared any cash, stock or other dividends; (b) made
any other distribution on or payment, redemption or repurchase with respect to
outstanding shares; (c) sold or otherwise disposed of any of its property or
assets of any kind or character other than in the ordinary course of business;
(d) entered into any agreement, written or oral, contemplating any indebtedness
or transaction outside of the usual and ordinary course of its business;
(e) entered into any transaction which would result in the recognition of
goodwill or any other intangible asset; or (f) granted to any officer or
salaried employee or any class of other employees any bonus or any increase in
compensation in any form in excess of 5% of the amount thereof in effect as of
the

Interim Date or any severance or termination pay other than an arrangement in
effect as of the Interim Date, or loan, or entered into any written employment
agreement with any person. Since the Interim Date, there has not been any
change in the accounting principles, policies or practices of Holdings or the
Subsidiaries as theretofore applied, or the method or ratio of allocating or
charging expenses, including the basis upon which assets and liabilities are
recorded and earnings and profits are ascertained.

3.14 TAXES.

(a) The Company has filed or caused to be filed in a timely
manner (within any applicable extension periods) with the appropriate
Governmental Authority all Tax Returns required to be filed by the Code or by
applicable Tax laws. As of the time of filing the Tax Returns of the Company or
any Tax Returns of the Company not yet filed as of the Closing Date, the Tax
Returns correctly reflected or will correctly reflect the facts regarding the
income, business, assets, operations, activity, or status of the Company and any
other information required to be shown thereon. All Taxes due from the Company
prior to the date hereof have been timely paid in full by the due date thereof
(within any applicable extension periods). As set forth on Section 3.14, the
Federal income tax returns of Holdings and ComStream have been examined by the
IRS and all deficiencies resulting from such examinations have either been paid
or adequately provided for.

(b) Except as set forth on Schedule 3.14, there are no
outstanding agreements or waivers extending the statutory period of limitation
applicable to any Tax Returns with respect to the Company.

(c) As of the close of business on the Closing Date, the
Company will not be a party to any Tax sharing agreement or similar arrangement
and will have no obligation under or related to any prior such agreement or
arrangement.

(d) Except as set forth on Schedule 3.14, to the Knowledge
of Spar (i) the charges, accruals, and reserves for Taxes with respect to the
Company for any Pre-Closing Tax Period (as defined in Section 10.3(b)) or any
Pre-Closing Tax Period for which no Tax Return has yet been filed reflected on
the books of the Company (excluding any provision for deferred income taxes) are
adequate to cover such Taxes; (ii) neither Holdings nor any Subsidiary is
delinquent in the payment of any Tax or has requested any extension of time
within which to file any Tax Return and has not yet filed such Return;
(iii) there are no request for rulings or determinations in respect of any Tax
pending between the Company or any Subsidiary; (iv) there are no requests for
rulings or determinations in respect of any Tax pending between the Company and
any Governmental Authority; (v) neither Holdings nor any Subsidiary owns any
interest in real property in the State of New York or in any other jurisdiction
in which a Tax is imposed on the transfer of a controlling interest in an entity
that owns any interest in real property; (vi) none of the property owned or used
by the Company is subject to a tax benefit transfer lease executed in accordance
with Section 168(f) of the Internal Revenue

Code of 1954, as amended; (vii) none of the property owned or used by Holdings
or any Subsidiary is subject to a lease, other than a "true" lease for federal
income tax purposes; (viii) none of the property owned by the Company is
"tax-exempt use property" within the meaning of Section 168(h) of the Code;
(ix) there are no liens for Taxes upon the assets of the Company except liens
for current Taxes not yet due; (x) Spar is not subject to withholding under
Section 1445 of the Code with respect to any transaction contemplated hereby;
(xi) neither Holdings nor any Subsidiary has been a member of an affiliated
consolidated, combined or unitary group other than one of which Holdings was the
common parent; (xii) neither Holdings nor any Subsidiary will be required to
include any adjustment in taxable income for any Tax period or portion of a Tax
period following the Closing Date under Section 481(c) of the Code (or any
similar provision of the Tax laws of any jurisdiction) as a result of a change
in method of accounting for a Pre-Closing Tax Period or pursuant to the
provisions of any agreement entered into with any Governmental Authority with
regard to the Tax liability of the Company for any Pre-Closing Tax Period other
than as reflected in the deferred tax asset on the books of the Company;
(xiii) all information set forth in the notes to the financial records of the
Company relating to Tax matters is true and complete; (xiv) the Company
possesses, or will possess on the Closing Date, all previously filed Tax Returns
and work papers reasonably necessary for Buyer to duly file all Tax Returns for
periods ending after the Closing Date; and (xv) there are no deferred
intercompany transactions (within the meaning of Treasury Regulations
Section 1.1502-13 or any predecessor provision) between Holdings and/or any
Subsidiary, which would impose Tax liability on the Company after the Closing
Date.

(e) To the Knowledge of Spar, Holdings and the Subsidiaries
have disclosed on their federal income Tax Returns all positions taken therein
that in the Company's judgment could give rise to a substantial understatement
of federal income Tax within the meaning of Code Section 6662 or its
predecessor.

(f) Schedule 3.14 sets forth the filed amount of any
federal and California net operating loss carryover, net capital loss carryover,
investment or other credit carryover, unused foreign tax, or excess charitable
contribution allocable to Holdings and ComStream as of December 31, 1996. As to
the representation contained in this Section 3.14(f), Spar does not represent
that any of such net operating loss carryover, net capital loss carryover,
investment or credit carryover, unused foreign tax, or excess charitable
contribution can be utilized by the Buyer.

3.15 ASSETS OTHER THAN REAL PROPERTY INTERESTS. The Company has
good and valid title to all assets reflected on the Balance Sheet, except those
sold or otherwise disposed of since the date of the Balance Sheet in the
ordinary course of business, in each case free and clear of all Liens except any
Permitted Liens and those Liens set forth on Schedule 3.15. This Section 3.15
does not relate to real property or interests in real property, such items being
the subject of Section 3.16.

3.16 REAL PROPERTY. The Company does not own in fee or otherwise
any real property. Schedule 3.16 sets forth a complete list of all real
property and interests in real property leased by the Company (individually, a
"Leased Property") and as to Leased Property, identifies any leases relating
thereto. The Company has good and valid title to the leasehold estates in all
Leased Property, in each case free and clear of all Liens, easements, covenants,
rights-of-way and other similar restrictions of any nature whatsoever, except
(i) Permitted Liens, (ii) easements, covenants, rights-of-way and other similar
restrictions of record, and (iii) (A) zoning, building and other similar
restrictions, (B) Liens that have been placed by any developer, landlord or
other third party on property over which the Company has easement rights or on
any Leased Property and subordination or similar agreements relating thereto and
(C) unrecorded easements, covenants, rights-of-way or other similar
restrictions, none of which items set forth in clauses (A), (B) and (C) above,
individually or in the aggregate, materially impair the continued use and
operation of the property to which they relate. Except as set forth on
Schedule 3.16, Spar and Company have heretofore made available to Buyer true and
complete copies of all leases and similar documents relating to all real
property leased by Company or any Subsidiary. Company and the Subsidiaries have
performed all material obligations required to be performed with respect to such
leased real property and are not in default under any lease or other agreement
to which any of them is or has been made a party with respect to such leased
real property. Except as set forth on Schedule 3.16, the consummation of the
transactions contemplated hereby will not result in any breach or cancellation
or other adverse effect in respect of the real property lease interests of
Company or any Subsidiary. None of the improvements made to such leased real
property for the businesses conducted by Company or the Subsidiaries thereon is
in violation of any use or occupancy restriction, limitation or other condition
or any zoning or building law, code or ordinance.

3.17 PATENTS, MARKS, TRADE NAMES, COPYRIGHTS AND REGISTRATIONS.

(a) The Company has sufficient title and interest in, or
the right to use, all Intellectual Property (as defined below) of ComStream and
its subsidiary in their business as now conducted, and the consummation of the
transactions contemplated hereby will not alter or impair in an adverse manner
such Intellectual Property.

(b) "Intellectual Property" includes United States and
foreign patents, trademarks, service marks, trade names, copyrights, mask work
registrations, trade secrets (including processes and software programs) and
other proprietary rights, registrations and applications therefor.

(c) The Company is not in default under any material
agreement pursuant to which it is licensing Intellectual Property of a third
party or granting licenses to its own Intellectual Property. The Company has
not notified any other party of an alleged default of any such agreement, except
as set forth in Schedule 3.17. The Company has not received any communications
alleging that the Company has

violated in any material respect any other person's Intellectual Property rights
or has engaged in unfair competition against such person, except as set forth in
Schedule 3.17.

(d) The Company has written agreements in effect with all
of their employees and consultants who have access to the Company's Intellectual
Property.

(e) The Company (i) does not now infringe or misappropriate
any third party's Intellectual Property rights, and (ii) does not have any
material liability for any past infringement or misappropriation. Except as set
forth in Schedule 3.17, no claim has been made or is, to the Knowledge of Spar,
threatened with regard to any third party Intellectual Property right, including
any allegation of Intellectual Property infringement or misappropriation or of
any breach or default of an Intellectual Property license or similar agreement.

(f) Each of the Company's patents and patent applications,
registered copyrights and copyright applications, trademarks and service marks
and trademark and service ▇▇▇▇ applications, and mask work registrations and
mask work registration applications are set forth on Schedule 3.17.

(g) Schedule 3.17 sets forth a list that is true, accurate
and complete in all material respects of the material technologies and
proprietary rights of the Company that are necessary for the business of the
Company as now conducted (collectively, the "Proprietary Rights"). The Company
has all Proprietary Rights necessary to conduct the Company's business as it is
conducted as of the date hereof. All agreements that grant or otherwise convey
to any third party any ownership or license rights to, or interest in, the
Proprietary Rights are expressly identified in Schedule 3.17 and/or in
Schedule 3.18, except for such agreements that would not impair in any material
respect the ownership or usage of the Proprietary Rights. The Company has taken
all necessary actions to protect the confidentiality of the trade secrets
embodied in the Proprietary Rights, except where the failure to take such
actions would not impair in any material respect the ownership or usage of the
Proprietary Rights. The Company has not made any disclosure of the Proprietary
Rights to any third party nor taken any other action that would have a material
adverse effect on the Proprietary Rights. All information concerning the
Proprietary Rights set forth on Schedule 3.17 is true, accurate and complete in
all material respects.

3.18 MATERIAL CONTRACTS. The Company is not in material breach of
any contract, agreement or commitment that is material to the Company's business
taken as a whole. The Company is not a party to any government contract subject
to the Assignment of Contracts Act, 41 U.S.C. Section 3727 or the Federal
Acquisition Regulations. Each of the Company's material contracts is set forth
on Schedule 3.18 hereto. All of the agreements set forth in Schedule 3.18 are
in full force and effect, are valid and binding and are enforceable in
accordance with their terms in favor of the Company, except (a) as such terms
may be limited by bankruptcy, insolvency and similar laws affecting the
enforcement of creditors' rights generally and (b) as the remedy of specific
performance

and injunctive and other forms of equitable relief may be subject to equitable
defenses and to the discretion of the court before which any proceeding therefor
may be brought. To the Knowledge of Spar (i) there are no liabilities
(including without limitation penalties) of any party to any such agreement
arising from any material delay, breach or default thereunder, and (ii) no event
has occurred which with the passage of time or the giving of notice or both
would constitute a material breach or default by any party thereto.

3.19 LITIGATION. Schedule 3.19 sets forth a list, as of the date of
this Agreement, of all pending and, to the Knowledge of Spar, threatened
lawsuits or claims which (a) involves a claim by the Company of more than
$250,000 or a claim against the Company of an unspecified amount or for more
than $50,000, (b) seeks any injunctive relief or (c) relates to the transactions
contemplated by this Agreement. Except as disclosed on Schedule 3.19, neither
the Company nor the Subsidiaries is in default under any judgment, order or
decree of any court, administrative agency or commission or other Governmental
Authority applicable to it or any of its properties, assets, operations or
businesses; except where such default would not have a Material Adverse Effect.

3.20 EMPLOYEE BENEFIT PLAN. Schedule 3.20 sets forth a list of each
Company Plan. The Company has made available to Buyer true, complete and
correct copies of (i) each Company Plan, (ii) the most recent annual report on
Form 5500 filed with the IRS with respect to each Company Plan (if any such
report was required), (iii) the most recent summary plan description for each
Company Plan for which such a summary plan description is required, and
(iv) each trust agreement and group annuity contract relating to any Company
Plan.

3.21 ERISA PLANS. To the Knowledge of Spar, each Company Plan
conforms in all material respects to, and its administration is in conformity in
all material respects with, all applicable federal laws; no liability under
ERISA has been or is expected to be incurred by the Company with respect to any
such plan; full payment has been made of all amounts that the Company is
required to have paid as contributions to such plans; there is not any
accumulated funding deficiency with respect to any of such plans; and to the
Company's best knowledge, the current value of accrued benefits of each such
plan does not exceed the current value of such plan's assets.

3.22 EMPLOYEE AND LABOR RELATIONS.

(a) There is no labor strike, dispute, or work stoppage or
lockout pending, or, to the Knowledge of Spar, threatened, against the Company.

(b) To the Knowledge of Spar, no union organization
campaign is in progress with respect to the Company Employees, and no question
concerning representation exists respecting such Employees.

(c) Except as set forth on Schedule 3.22, there is no
unfair labor practice charge or complaint against the Company pending, or, to
the Knowledge of Spar, threatened, before the National Labor Relations Board.

(d) Except as set forth on Schedule 3.22, there is no
pending, or, to the Knowledge of Spar, threatened, formal written employee
grievance.

(e) Except as set forth on Schedule 3.22, no charges with
respect to or relating to the Company are pending before the Equal Employment
Opportunity Commission or any other Governmental Authority responsible for the
prevention of unlawful employment practices.

(f) Schedule 3.22 sets forth certain pending immigration
matters in connection with persons in the employ of the Company.

(g) The Company has no obligations to ▇▇▇▇ ▇▇▇▇▇▇▇,
including without limitation any actual or contingent obligation to repurchase
shares of the Company's common stock from him.

(h) All outstanding options to purchase Common Stock of
Holdings will terminate as of the Closing to the extent not theretofore
exercised.

(i) The Company has no obligations to its employees under
the retention (as opposed to the severance) provisions of the Prior Plan (as
defined in Section 5.6).

3.23 COMPLIANCE WITH APPLICABLE LAWS. The Company is in compliance
with all applicable Requirements of Law, except for such incidents of
noncompliance which, individually and in the aggregate, would not have a
Material Adverse Effect. The Company has not received any written communication
from a Governmental Authority that alleges that the Company is not in compliance
with any Requirement of Law. This Section 3.23 does not relate to environmental
matters, which are the subject of Section 3.24, or matters with respect to
Taxes, which are the subject of Section 3.14.

3.24 ENVIRONMENTAL MATTERS. To the Knowledge of Spar:

(a) The Company is not in material violation of any
applicable Environmental Law nor is Holdings or any Subsidiary under
investigation or review by any Governmental Authority with respect to compliance
therewith, or with respect to the generation, use, treatment, storage or
disposal, or the spillage or other release of any Hazardous Material;

(b) There is no Hazardous Material that may pose any
material risk to safety, health or the environment on or under any property
owned, leased or operated by the Company as of the date hereof and there has
heretofore been no spillage,

discharge, release or disposal of any such Hazardous Material on or under such
property by the Company in an amount and of a nature which could reasonably be
expected to result in material liability to the Company; and

3.25 MINUTE BOOKS AND STOCK RECORDS. Spar has made available to
Buyer true and correct copies of the minute books of the Company, which contain
a complete and correct record of all meetings of the Boards of Directors of the
Company and all meetings of its and their shareholders and all actions by
written consent without a meeting by such Boards of Directors and its and their
shareholders since the date of incorporation and reflect accurately in all
material respects all actions by such directors and by shareholders with respect
to all transactions referred to in such minutes.

3.26 WARRANTY WORK AND PRODUCTS LIABILITY. Except as disclosed on
Schedule 3.26, to the Knowledge of Spar, there are no claims by an individual
customer or relating to a particular product line aggregating in excess of
$50,000 made or threatened in writing against the Company based upon alleged
defects in products manufactured or services performed by it.

3.27 ABSENCE OF CERTAIN COMMERCIAL PRACTICES. Neither Company nor
any Subsidiary has taken any action in violation of the Foreign Corrupt
Practices Act.

3.28 POTENTIAL CONFLICTS OF INTEREST. Except as set forth on
Schedule 3.28 hereto, neither Spar nor any entity controlled by Spar:

(i) owns, directly or indirectly, any interest in (excepting not
more than 1% stockholdings for investment purposes in securities of publicly
held and traded companies), or otherwise receives remuneration from, any person
which is, or is engaged in business as, a competitor, lessor, lessee, customer
or supplier of the business of Company or the Subsidiaries; or

(ii) owns, directly or indirectly, in whole or in part, any tangible
or intangible property that Company or any Subsidiary uses or the use of which
is necessary for the conduct of the business of Company or any Subsidiary.

3.29 BANK ACCOUNTS. Schedule 3.29 contains a true and complete list
showing for Company and each Subsidiary the name and address of each bank in
which it has an account or safe deposit box and the name of each person
authorized to draw thereon or have access thereto.

3.30 SUPPLIERS AND CUSTOMERS. Schedule 3.30 contains a list of the
ten largest customers and suppliers of Company and the Subsidiaries (measured by
dollar volume in each case) during the fiscal year ended December 31, 1997,
showing with respect to each, the name and dollar volume.

3.31 ACCURACY OF INFORMATION. No representation or warranty by Spar
or Company hereunder and no certificate or Schedule furnished or to be furnished
pursuant hereto by Spar or Company contains or will contain any untrue statement
of a material fact, or omits or will omit to state a material fact necessary to
make the statements contained therein not misleading in light of the
circumstances.

3.32 INVESTMENT. Spar is acquiring the Convertible Note and any
Radyne Corp. Common Stock which it may acquire upon conversion of the
Convertible Note (collectively, the "Radyne Securities") for its own account,
for investment, and without a view toward the public distribution thereof in
violation of the Securities Act.

3.33 SECURITIES NOT REGISTERED. Spar acknowledges that (i) the
Radyne Securities are not registered under the Securities Act, (ii) the Radyne
Securities are therefore subject to restrictions on transfer and resale as
prescribed therein; and (iii) the certificates representing the Radyne
Securities will contain appropriate restrictive legends.

3.34 ACCREDITED INVESTOR. Spar hereby acknowledges that it is an
"accredited investor" as such term is defined in the Securities Act, it is a
sophisticated investor which is capable of evaluating its investment in the
Radyne Securities and the risks involved in such investment and it has been
provided the opportunity to make appropriate inquiries of members of Buyers
management with respect to the business of Buyer.

3.35 SEC DISCLOSURE FORMS. Spar has received and has reviewed
Buyer's Form 10-K for the fiscal year ended December 31, 1997 as well as the
Buyer's Forms 10-Q for the fiscal periods ended March 31, 1998 and June 30, 1998
("Buyer's SEC Reports").

ARTICLE IV

REPRESENTATIONS AND WARRANTIES OF BUYER

Buyer hereby represents and warrants to Spar as follows:

4.1 ORGANIZATION; STANDING AND AUTHORITY OF BUYER. Buyer is a
corporation duly organized, validly existing and in good standing under the laws
of New York. Buyer has all requisite corporate power and authority to enter
into this Agreement and to consummate the transactions contemplated hereby. All
corporate acts and other proceedings required to be taken by Buyer to authorize
the execution, delivery and performance of this Agreement and the consummation
of the transactions contemplated hereby have been duly taken. This Agreement
has been duly executed and delivered by Buyer and constitutes a valid and
binding obligation of Buyer, enforceable against Buyer in accordance with its
terms, except as enforceability may be limited by bankruptcy, insolvency,
reorganization, moratorium and other similar laws relating to or affecting

creditors' rights generally or by general equitable principles (regardless of
whether such enforceability is considered in a proceeding in equity or at law).

4.2 NO BREACH OR DEFAULT; CONSENTS AND APPROVALS.

(a) Except as set forth on Schedule 4.2, the execution and
delivery by Buyer of this Agreement and the other documents referenced herein to
which Buyer is a party and the consummation of the transactions contemplated
hereby and thereby will not result in or constitute any of the following: (i) a
default or an event that, with the giving of notice or lapse of time, or both,
would be a default, breach or violation of the charter documents or bylaws of
Buyer or any material Buyer Contract, (ii) an event that would permit any party
to terminate any material Buyer Contract or to accelerate the maturity of any
indebtedness or other material obligation of Buyer, (iii) the creation or
imposition of any material Lien on any of the properties of Buyer, or (iv) a
violation of any order, writ, injunction, decree, statute, rule or regulation
applicable to Buyer, except for violations which would not have a material
adverse effect on the financial condition, assets or results of operations of
Buyer.

(b) Except as set forth on Schedule 4.2, no authorization,
consent or approval of any Governmental Authority or any third party is
necessary for the consummation by Buyer of the transactions contemplated by this
Agreement and the other documents referenced herein to which Buyer is a party.

4.3 INVESTMENT INTEREST; ACCREDITED INVESTOR; RISK. The Shares
purchased by Buyer pursuant to this Agreement are being acquired for investment
only and not with a view to any public distribution thereof, and Buyer will not
offer to sell or otherwise dispose of the Shares so acquired by it in violation
of any of the registration requirements of the Securities Act or of any other
Requirement of Law. Buyer represents and warrants that it is an "Accredited
Investor" as such term is defined in Rule 501 under Regulation D of the
Securities Act. Buyer represents that it is able to bear the economic risk of
its investment in the Shares for an indefinite period of time.

4.4 AVAILABILITY OF FUNDS. Buyer has available all funds required
to consummate the transactions contemplated hereby.

4.5 BUYER'S ACKNOWLEDGMENT. Buyer acknowledges and agrees that,
(a) other than the representations and warranties of Spar specifically contained
in this Agreement, there are no representations or warranties of Spar either
expressed or implied with respect to Spar, the Company or the transactions
contemplated hereby and (b) it shall have a right to indemnification solely as
provided in Article X hereof and shall have no claim or right to indemnification
with respect to any other information, documents or materials furnished by Spar
or the Company or any of their officers, directors, employees, agents or
advisors to Buyer, including, without limitation, that certain Information
Memorandum dated July 1997 and supplements thereto or any information, documents
or material made available to Buyer in certain "data rooms," management
presentations or in any other form in expectation of the transactions
contemplated by this Agreement.

4.6 CAPITAL STOCK OF BUYER. The authorized capital stock of Buyer
is as set forth on Schedule 4.6. The Buyer's shares were duly authorized and
validly issued and are outstanding, fully paid and nonassessable. Except as set
forth on Schedule 4.6, there are no shares of capital stock or other equity
securities of the Buyer outstanding. The shares have not been issued in
violation of, and none of the shares are subject to, any preemptive or
subscription rights. Except as set forth on Schedule 4.6, there are no
outstanding warrants, options, "phantom" stock rights, agreements, convertible
or exchangeable securities or other commitments (other than this Agreement and
the Convertible Note) pursuant to which Buyer is or may become obligated to
issue, sell, purchase, return or redeem any shares of capital stock or other
securities of Buyer and no equity securities of Buyer are reserved for issuance
for any purpose.

4.7 ACCURACY OF INFORMATION. No representation or warranty by
Buyer hereunder and no certificate or Schedule furnished or to be furnished
pursuant hereto by Buyer contains or will contain any untrue statements of a
material fact, or omits or will omit to state a material fact necessary to make
the statement contained therein not misleading in light of the circumstances.
No representation contained in the Buyer's SEC Reports contains any untrue
statement of material fact, or omits to state any material fact necessary to
make statements contained therein not misleading. Buyer represents and warrants
that, since June 30, 1998, there has been no material adverse change to Buyer's
business.

4.8 ABSENCE OF CERTAIN CHANGES OR EVENTS. Except as set forth on
Schedule 4.8, since the Interim Date Buyer has not (a) paid or declared any
cash, stock ore other dividends; (b) made any other distribution on or payments,
redemptions or repurchase with respect to any outstanding shares; (c) sold or
otherwise disposed of any of its property or assets of any kind or character
other than in the ordinary course of business; (d) entered into any agreement
,written or oral contemplating any indebtedness or any transaction outside the
usual or ordinary course of its business; (e) entered into any transactions
which would result in the recognition of goodwill or any intangible assets.
Since the Interim Date, there has not been any change in the accounting
principles, policies or practices of Buyer as theretofore applied, or the method
or ratio of allocating or charging expenses, including the basis on which assets
and liabilities are recorded and earnings and profits are ascertained.

4.9 SUPPLIERS AND CUSTOMERS. Schedule 4.9 contains a list of the
ten largest customers and suppliers of Buyer (measured by dollar volume in each
case) during the fiscal year ended December 31, 1997, showing with respect to
each, the name and dollar volume.

ARTICLE V

MUTUAL COVENANTS

Each of Spar and Buyer covenants and agrees as follows:

5.1 CONSENTS Without modifying the mutual condition set forth in
Section 8.1: (i) Spar shall, and shall cause the Company to, use best efforts
to obtain all consents needed to consummate the transactions contemplated by
this Agreement, and (ii) Buyer shall cooperate with Spar and the Company in any
reasonable manner in connection with Spar and the Company obtaining any consents
required in connection with the transactions contemplated herein; PROVIDED,
HOWEVER, that such cooperation shall not include any requirement of any party
hereto to commence any litigation or offer or grant any accommodation (financial
or otherwise) to any third party. To the Knowledge of Spar, no such third party
has requested any such accommodation in exchange for such consent or otherwise
expressed an intent to withhold such consent.

5.2 PUBLICITY. Spar and Buyer agree that, from the date hereof
through the Closing Date, no public release or announcement concerning the
transactions contemplated hereby shall be issued by either party without the
prior consent of the other party (which consent shall not be unreasonably
withheld or delayed), except as such release or announcement may be required by
law or the rules or regulations of Canadian, United States or foreign securities
exchanges, in which case the party required to make the release or announcement
shall allow the other party reasonable time to comment on such release or
announcement in advance of such issuance.

5.3 GOVERNMENTAL FILINGS. Each of Spar and Buyer will as promptly
as practicable file with the United States Federal Trade Commission (the "FTC")
and the United States Department of Justice (the "DOJ") the notification and
report form, if any, required for the transactions contemplated hereby and any
supplemental information requested in connection therewith pursuant to the HSR
Act and any filing required by Section 5021 of the Trade Act of 1988, Pub.L.
100-418, 102 stat. 1107 (Aug. 23, 1988). Any such notification and report form
and supplemental information will be in substantial compliance with the
requirements of the HSR Act and the Exon-▇▇▇▇▇▇ Act. Each of Buyer and Spar
shall furnish to the other such necessary information and reasonable assistance
as the other may request in connection with its preparation of any filing or
submission which is necessary under the HSR Act and the Exon-▇▇▇▇▇▇ Act. Spar
and Buyer shall keep each other apprised of the status of any communications
with, and inquiries or requests for additional information from, the FTC, the
DOJ and the Committee on Foreign Investment and shall comply promptly with any
such inquiry or request. Each of Spar and Buyer will use its best efforts to
obtain any clearance required under the HSR Act and the Exon-▇▇▇▇▇▇ Act for the
purchase and sale of the Shares.

5.4 RECORDS. After the Closing, with reasonable advance written
notice and at the expense of the requesting party, Buyer and Spar agree to
furnish or

cause to be furnished to each other and their representatives, employees,
counsel and accountants access, during normal business hours, to such
information (including Records pertinent to the Company) and assistance relating
to the Company as is reasonably necessary for financial reporting and accounting
matters, the settlement of any insurance claims, the preparation and filing of
any tax returns, reports or forms or the defense of any tax claim or assessment;
PROVIDED, HOWEVER, that such access does not unreasonably disrupt the normal
operations of Spar, Buyer or the Company.

5.5 SEQUENCE LEASE. Spar and Buyer agree to cooperate in seeking
approval from the landlord of the buildings known as "Sequence A" and
"Sequence B," which are currently leased to ComStream, to subdivide the lease on
such buildings into separate leases for Sequence A and Sequence B. Buyer agrees
that in the event the parties are unable to subdivide the lease prior to the
Closing Date, Spar will reimburse ComStream for all rent and direct operating
costs related to Sequence B until such time as such lease is subdivided. Spar
and Buyer agree that the Balance Sheet reflects a reserve of approximately
$1,700,000 designated for estimated future costs related to Sequence B. Upon
the Closing, such reserve shall be credited to income in the accounts of the
Company. Spar agrees to indemnify the Company for any losses in connection with
and Spar shall be entitled to any recoveries relating to leases of California
real property to which the Company is presently party, except in respect of
Sequence A. The Company shall pursue, at Spar's expense, existing litigation
with respect to rent due on the Company's Santa ▇▇▇▇▇ facility.

5.6 TRANSITION PLAN. Spar and Buyer agree to cooperate in good
faith to develop, document in writing and implement a customer transition and an
employee transition and retention plan (the "Transition Plan") prior to the
public announcement of the transactions contemplated by this Agreement. Buyer
agrees that (a) the loss of one or more employees, regardless of position, shall
not constitute a material adverse change in the Company's business and (b) the
Company shall retain, and shall indemnify Spar and its Affiliates against,
severance (but not retention) liabilities arising under ComStream's 1997
retention plan (the "Prior Plan") to employees retained by ComStream after the
date of execution of this Agreement. Spar shall assume, and Spar shall
indemnify Buyer and its Affiliates (including the Company) against, all
liabilities arising under the Prior Plan to former ComStream employees
terminated on or prior to the date of execution of this Agreement.

ARTICLE VI

COVENANTS OF SPAR

Spar covenants and agrees as follows:

6.1 ACCESS. Subject to the confidentiality provisions of
Section 7.1 hereof, prior to the Closing, Spar will, and will cause the Company
to, give Buyer and its representatives, employees, counsel and accountants
reasonable access and upon

reasonable advance notice, to the personnel, properties and Records of the
Company; PROVIDED, HOWEVER, that such access does not unreasonably disrupt the
normal operations of the Company.

6.2 INTERIM OPERATIONS. Except as set forth on Schedule 3.13 or as
otherwise contemplated by this Agreement or consented to or approved by Buyer in
writing, Spar covenants and agrees that from the date hereof until the Closing
Date or the earlier termination of this Agreement pursuant to Article XIII
hereof, the Company:

(a) shall be operated in the ordinary and usual course,
consistent with the management practices in effect on the Interim Date,
including, that the Company (i) shall not sell, transfer, mortgage or otherwise
dispose of, or encumber, any of the assets of the Company, other than in the
ordinary course of business, consistent with existing practice, (ii) shall not
make or become obligated to make any capital expenditures or enter into any
commitments therefor, except in the ordinary course of business, consistent with
existing practice, (iii) shall not change in any way its accounting policies or
practices from those in effect on the Interim Date; (iv) shall continue to
satisfy its accounts payable and collect its accounts receivable in accordance
with past practices; and (v) shall not incur or pay any Spar management fees or
pay interest to Spar.

(b) shall not amend the Certificate of Incorporation or
Bylaws of Holdings or any Subsidiary;

(c) shall use commercially reasonable efforts to preserve
intact its business organization and to preserve the goodwill of those having
business relationships with the Company;

(d) shall not authorize for issuance, issue, sell or
deliver any shares of capital stock or any other securities or issue any
securities convertible into or exchangeable for, or options, warrants to
purchase, scrip, rights to subscribe for, calls or commitments of any character
whatsoever relating to, or enter into any contract, understanding or arrangement
with respect to the issuance of, any shares of capital stock or any other
securities or enter into any arrangement or contract with respect to the
purchase or voting of any shares of capital stock, or adjust, split, combine or
reclassify its capital stock or other securities, or make any other changes in
its capital structure;

(e) shall not declare, set aside, pay or make any dividend
or other distribution or payment (whether in cash, stock or property) with
respect to, or purchase or redeem, any shares of their capital stock;

(f) except as may be required to comply with applicable
law, shall not (i) adopt or amend any existing bonus, profit sharing,
compensation, severance, termination, stock option, stock appreciation right,
restricted stock, performance unit, pension, retirement, deferred compensation,
employment or other employee benefit agreements, trusts, plans, funds or other
arrangements for the benefit or welfare of any present or former director,
officer or employee, or increase in any manner the

compensation or fringe benefits of any director, officer or employee or pay any
benefit not required by any existing plan or arrangement (including without
limitation the granting of stock options, stock appreciation rights, shares of
restricted stock or performance units) or take any action or grant any benefit
not expressly required under the terms of any existing agreements, trusts,
plans, funds or other such arrangements or enter into any contract, agreement,
commitment or arrangement to do any of the forgoing, or (ii) make any loan to,
or otherwise extend credit to, any employee, officer, director or shareholder of
the Company, and on the Closing Date, no such loans to employees, officers,
directors or shareholders shall be outstanding, except pursuant to and under any
employee pension benefit plan, computer loans, or advances made in the ordinary
course of business; and

(g) shall terminate no employees without cause or the
Buyer's consent.

6.3 INSURANCE. Spar shall keep, or cause to be kept, all insurance
policies presently maintained relating to the Company and its properties, or
replacements therefor, in full force and effect through the close of business on
the Closing Date. Schedule 6.3 sets forth all the insurance policies presently
owned and maintained by the Company. Any and all additional insurance policies
presently maintained relating to the Company are maintained by Spar and
described on Schedule 6.3. Neither Buyer nor the Company will have any rights
under any such Spar insurance policies from and after the Closing Date; provided
that Spar shall take such actions as are necessary to seek recovery by the
Company of insurable Losses under Article X hereof.

6.4 RESIGNATIONS; USE OF COMSTREAM NAME. On the Closing Date, Spar
shall cause to be delivered to Buyer duly signed resignations, effective
immediately after the Closing, of all directors of Holdings and each Subsidiary,
and shall take such other action as is necessary to accomplish the foregoing.
On the Closing Date, or as promptly as practicable thereafter, Spar shall cause
the name "ComStream" to be deleted from any subsidiaries or Affiliates of Spar.

6.5 INTERCOMPANY PAYABLES; OTHER AMOUNTS. Before the Closing Date,
Spar shall, to the extent feasible, cause Holdings and each Subsidiary to settle
all current intercompany payables and receivables between Spar and Holdings and
such Subsidiary. Any such intercompany amounts not so settled by the Closing
Date shall be paid within thirty (30) days of Closing. Spar agrees promptly to
forward to Holdings any and all amounts due to the Company that are received by
Spar after the Closing Date.

ARTICLE VII

COVENANTS OF BUYER

Buyer covenants and agrees as follows:

7.1 CONFIDENTIALITY. Buyer acknowledges that the information
heretofore and hereafter provided to it by Spar is subject to the terms of a
confidentiality agreement between Buyer and Spar (the "Confidentiality
Agreement"), the terms of which are incorporated herein by reference. Effective
upon, and only upon, the Closing, the Confidentiality Agreement will terminate;
provided, however, that Buyer acknowledges that the Confidentiality Agreement
will terminate only with respect to information relating solely to Holdings and
the Subsidiaries; and provided further, however, that Buyer acknowledges that
any and all other information provided to it by Spar or Spar's representatives
concerning Spar shall remain subject to the terms and conditions of the
Confidentiality Agreement after the date of the Closing. Except as required by
applicable law, Spar covenants and agrees to keep confidential and not to
disclose any material non-public information regarding the Company after the
Closing as if subject itself to the Confidentiality Agreement.

7.2 INTERCOMPANY PAYABLES; OTHER AMOUNTS. On the Closing Date,
Buyer shall, to the extent feasible, cause the Company to settle all current
intercompany payables and receivables between Spar and the Company. To the
extent any such intercompany amounts remain unsettled as of the time of Closing,
Buyer shall cause the Company to pay such amounts as promptly as practicable and
in no event later than thirty (30) days after Closing. Buyer agrees to promptly
forward or cause to be forwarded to Spar any and all amounts due to Spar that
are received by Buyer or the Company after the Closing Date.

7.3 CAPITAL STRUCTURE. As of the Interim Date and until the Closing
Date, Buyer shall not authorize for issuance, issue, sell or deliver any shares
of capital stock or any other securities or issue any securities convertible
into or exchangeable for, or options (except for employee stock options),
warrants to purchase, scrip, rights to subscribe for, calls or commitments of
any character whatsoever relating to, or enter into any contract, understanding
or arrangement with respect to the issuance of, any shares of capital stock or
any other securities or enter into any arrangement or contract with respect to
the purchase or voting of any shares of capital stock, or adjust, split, combine
or reclassify its capital stock or other securities, or make any other purchase
or voting of any shares of capital stock, changes in its capital structure.

ARTICLE VIII

CONDITIONS PRECEDENT TO CLOSING

8.1 MUTUAL CONDITIONS. The obligation of each party to effect the
transactions contemplated hereby shall be subject to fulfillment, at or prior to
the Closing, of each of the following conditions:

(a) There shall be no claim, action, suit, injunction,
order, investigation or other proceeding pending or threatened before any court
or Governmental Authority which restrains or prohibits the transactions
contemplated by this Agreement or the obtaining of material damages or other
relief in connection therewith.

(b) The waiting period under the HSR Act and the
Exon-▇▇▇▇▇▇ Act, if applicable to the purchase and sale of the Shares, shall
have expired or been terminated.

8.2 BUYER'S CONDITIONS. The obligations of Buyer to purchase and
pay for the Shares are subject to fulfillment (or written waiver by Buyer) as of
the Closing of each of the following conditions:

(a) The representations and warranties of Spar made in this
Agreement shall be true and correct in all material respects as of the date
hereof and, except as specifically contemplated by this Agreement, on and as of
the Closing Date, as though made on and as of the Closing Date; and Spar shall
have performed or complied in all material respects with all obligations and
covenants required by this Agreement to be performed or complied with by Spar by
the time of the Closing; and Spar shall have delivered to Buyer a certificate
dated the Closing Date and signed by an authorized officer of Spar confirming
the foregoing. The conditions in this Section 8.2(a) shall not be deemed
unsatisfied solely because any one or more of the following events, changes or
developments affecting the representations and warranties shall have occurred
after the date hereof and such events, changes or developments have or could
reasonably be expected to have a Material Adverse Effect:

(i) changes to contracts (or amendments to contracts)
with respect to which the Buyer has given its consent;

(ii) failure or inability by the Company to acquire new
customers or prospective orders, including, without limiting the generality of
the foregoing, the failure or inability to execute (a) contracts and agreements
currently under discussion or negotiation or (b) contracts and agreements with
respect to which Buyer refuses to give its consent;

(iii) changes in general market conditions related to the
business of the Company, including, without limiting the generality of the
foregoing, the

entry of new competitors into the market related to the business or the
expansion of existing competitors within such markets;

(iv) delays in product shipments due to changes or delays
in the needs of customers in the ordinary course of business;

(v) delays in the delivery of materials from suppliers in
the ordinary course of business;

(vi) loss of customers due to a pre-existing competitive
relationship between the customer and Buyer; and

(vii) delays in the design or implementation process of
products in the ordinary course of business;

(b) Buyer shall have received opinions dated the Closing
Date of ▇▇▇▇▇▇, ▇▇▇▇ & ▇▇▇▇▇▇▇▇ LLP and ▇▇▇▇▇▇ & Elliot, as to matters customary
in stock purchase transactions, which opinions shall be in form and substance
reasonably satisfactory to Buyer.

(c) Buyer shall have received a certified copy of the
duly adopted resolutions of the Board of Directors of Spar authorizing the
execution of this Agreement and the consummation of the transactions
contemplated hereby.

(d) Buyer shall have received an incumbency certificate
with respect to all parties executing on behalf of Spar this Agreement or any of
the documents relating to the transactions contemplated hereby.

(e) All third party consents (including those set forth
on Schedule 3.9), terminations, approvals, permits and authorizations required
to be obtained by Spar, Holdings or the Subsidiaries in connection with the
execution, delivery and performance of this Agreement and the consummation of
the transactions contemplated hereby shall have been made or obtained, and Spar,
Holdings or the Subsidiaries shall have delivered to Buyer evidence thereof that
is reasonably satisfactory to Buyer.

(f) All of the Company's indebtedness to Spar and its
Affiliates or to the Bank of Nova Scotia or any other institutional lender
(collectively, "Lenders") shall have been eliminated without the recognition of
income in excess of available net operating losses of the Company for federal or
state income tax purposes, and Spar shall have delivered to Buyer a certificate
dated the Closing Date and signed by an authorized officer of Spar confirming
the foregoing.

(g) Buyer shall have received from Spar a certificate of
Holdings to the effect that the Shares do not constitute a U.S. real property
interest within the meaning of Treasury Regulations Section 1.897-2(h).

8.3 SPAR'S CONDITIONS. The obligations of Spar to sell and deliver
the Shares to Buyer are subject to fulfillment (or written waiver by Spar) as of
the Closing of each of the following conditions:

(a) The representations and warranties of Buyer made in
this Agreement shall be true and correct in all material respects as of the date
hereof and, except as specifically contemplated by this Agreement, on and as of
the Closing Date, as though made on and as of the Closing Date, and Buyer shall
have performed or complied in all material respects with all obligations and
covenants required by this Agreement to be performed or complied with by Buyer
by the time of the Closing; and Buyer shall have delivered to Spar a certificate
dated the Closing Date and signed by an authorized officer of Buyer confirming
the foregoing.

(b) Spar shall have received an opinion dated the Closing
Date of ▇▇▇▇▇▇ & ▇▇▇▇▇▇▇, counsel to Buyer, as to the customary in stock
purchase transactions, which opinion shall be reasonably satisfactory in form
and substance to Spar.

(c) Spar shall have received a certified copy of the duly
adopted resolutions of the Board of Directors of Buyer authorizing the execution
of this Agreement and the consummation of the transactions contemplated hereby.

(d) Spar shall have received an incumbency certificate
with respect to all parties executing on behalf of Buyer this Agreement or any
of the documents relating to the transactions contemplated hereby.

(e) Except as set forth on Schedule 8.3, any and all
support agreements, lines of credit, guarantees, letters of credit and similar
instruments issued or guaranteed by Spar relating to the business of the Company
shall be canceled or terminated by the Closing.

(i) The Buyer shall on Closing deliver to Spar a standby
or replacement letter of credit from a financial institution reasonably
acceptable to Spar in an amount at least equal to the amount of the non-NSI
letters of credit set forth on Schedule 8.3 and on terms reasonably acceptable
to Spar to secure the obligations of the Buyer.

(ii) The Buyer shall use its best efforts to immediately
following the Closing (a) replace each of the non-NSI letters of credit
identified on Schedule 8.3 with a replacement letter of credit acceptable to the
beneficiaries thereof on the same terms as those contained in such letter of
credit (or terms otherwise acceptable to the beneficiary) and (b) cause the
non-NSI letters of credit to be canceled and returned to Spar upon delivery to
the beneficiary of the said replacement letter of credit.

(iii) The Buyer shall reimburse Spar on demand for any
costs incurred by Spar in maintaining each non-NSI letter of credit for the
period

following the Closing and shall indemnify and hold harmless Spar from and
against any losses suffered or incurred by Spar as a result of or arising out of
any payment made or obligation incurred under any of the non-NSI letters of
credit except any loss which results from any breach or default of the Company
or Spar prior to Closing of its obligations to the applicable beneficiary. Spar
shall reimburse the Company on demand for any costs incurred by the Company in
maintaining each NSI letter of credit identified on Schedule 8.3 and Buyer
agrees to cause the Company to maintain such letters of credit until their
expiration (or expiration of required replacement letter of credit).

(f) All third party consents (including those set forth
on Schedule 3.9), terminations, approvals, permits and authorizations required
to be obtained by Buyer in connection with the execution, delivery and
performance of this Agreement and the consummation of the transactions
contemplated hereby shall have been made or obtained, and Buyer shall have
delivered to Spar evidence thereof that is reasonably satisfactory to Spar.

ARTICLE IX

EMPLOYEE BENEFIT MATTERS

9.1 EMPLOYMENT.

(a) Effective as of the Closing, each employee of
Holdings or the Subsidiaries who is an employee of Holdings or a Subsidiary
immediately prior to the Closing shall continue to be employed by Holdings or
the Subsidiaries, as appropriate (or may be transferred to one of their
Affiliates), PROVIDED, HOWEVER, that any such continued employment shall not be
construed to limit the ability of the Buyer, Holdings, the Subsidiaries or their
Affiliates to terminate any such employee at any time for any reason. Each
employee who remains an employee of Holdings or the Subsidiaries as of the
Closing shall be a "Company Employee" for purposes of this Agreement until such
time as such employee is terminated by Company. Employment of Company Employees
after the Closing shall be subject to all of the Company's policies and
practices as the same may be amended from time to time on or after the Closing
Date, including the policy of employment-at-will.

(b) In the event of termination of any Company Employees
after Closing, Buyer agrees to cause the Company to pay in full all severance
obligations of the Company as in force as of the Closing Date, giving full
credit for all service with the Company both before and after the Closing Date.

(c) Buyer assumes all obligations and liabilities, if
any, under the WARN Act arising out of the transactions contemplated by this
Agreement. Buyer also agrees to comply with the terms of the WARN Act following
the Closing Date.

(d) Nothing contained herein, whether expressed or
implied, is intended to confer upon any Company Employee or their legal
representatives, any rights

or remedies, including, without limitation, any rights of employment for any
period of any nature or kind whatsoever under or by reason of this Agreement.

(e) For a period of two (2) years from and after the
Closing Date, Spar will not without Buyer's consent, which consent shall not be
unreasonably withheld, solicit Company Employees for employment.

9.2 BENEFITS.

(a) IN GENERAL. On and after the Closing Date, Buyer
shall provide Company Employees with the employee benefits generally provided to
other employees of the Buyer, subject to the terms of the Buyer's plans.

(b) WELFARE BENEFIT PLANS. Buyer will grant for purposes
of vacation and all welfare benefit plans (as defined in Employee Retirement
Income Security Act of 1974, as amended), except its retiree medical plan (if
any), past service credit to all Company Employees for all periods of time
credited to such Company Employees under the Company's welfare benefit plans.
With respect to Buyer Benefit Plans that provide medical or dental benefits
after the Closing Date, such plans shall waive any exclusions or limitations
with respect to pre-existing conditions, and actively-at-work exclusions and
shall provide that any expenses incurred on or before the Closing Date shall be
taken into account under such Buyer Benefit Plans for purposes of satisfying
applicable deductible, coinsurance and maximum out-of-pocket provisions.

(c) DEFINED CONTRIBUTION PENSION PLAN. Buyer shall take
whatever action is necessary, including amendment of its defined contribution
pension plan, to grant to each Company Employee past service credit for all
purposes under Buyer's defined contribution pension plan for all periods of
service credited to each such Company Employee under the Company's Retirement
Plan. Within ninety (90) days after the Closing Date, Spar shall provide to
Buyer such information as the Buyer requires to establish the service for the
Company Employees credited under Spar's defined contribution pension plan.

ARTICLE X

INDEMNIFICATION

10.1 INDEMNIFICATION BY SPAR. Subject to the terms and conditions
of this Article X, Spar shall indemnify Buyer, its Affiliates (including the
Company) and each of their respective officers, directors, employees and agents
against, and hold them harmless from, any Losses suffered or incurred by any
such Indemnified Person to the extent arising from, (a) if the Closing occurs,
any breach of any representation or warranty (both of which for the purposes of
determining Losses for indemnification purposes shall exclude any materiality
and knowledge qualifiers contained therein) of Spar contained in this Agreement
or in any certificate, instrument or other document delivered pursuant hereto or
(b) any breach of any covenant of Spar contained in this

Agreement requiring performance after the Closing Date, (c) other than as set
forth on the Balance Sheet or as contemplated by Section 3.10(b), any liability
or financial obligation of any nature, whether known or unknown or fixed or
contingent in nature, relating to the business and operations of Holdings and
the Subsidiaries prior to the Closing Date or (d) any Losses arising from
(i) the lawsuit captioned South Texas Electronics Co. v. ComStream Corporation,
(ii) the ownership, operation or sale of ComStream's Components division to
Rockwell Semiconductor Systems, Inc., (iii) the ownership, operation or sale of
ComStream's Satellite Global Access Division to NSI Network Sciences
International Ltd. including without limitation all claims of Axio International
(Hong Kong) Limited, (iv) Spar's obligations under Section 5.5 and 5.6 or
(v) that certain SGA Business and Technology Non-Competition Agreement dated
April 16, 1998 between ComStream Corporation and NSI Network Sciences
International Ltd. as the same may be applied in respect of activities of Buyer
and its Affiliates (except the Company); PROVIDED, HOWEVER, that Spar shall not
have any liability under Sections 10.1(a), (b), (c) or Section 10.3 unless the
aggregate of all Losses relating thereto for which Spar would, but for this
provision, be liable exceeds on a cumulative basis an amount equal to $2,500,000
(and then only to the extent of any such excess) and PROVIDED, FURTHER, that
Spar's aggregate liability pursuant to Sections 10.1(a), (b), (c) or
Section 10.3 shall not exceed amount of the Convertible Note and PROVIDED,
FURTHER, that Spar's liability pursuant to this Section 10.1 shall first be
offset by any outstanding principal and interest owed Spar under the Convertible
Note and in the event that the Convertible Note has been converted into equity,
Spar's liability pursuant to this Section 10.1 shall be satisfied by Spar's
transfer of shares of the Buyer's Common Stock to Buyer.

10.2 INDEMNIFICATION BY BUYER; RECOVERIES.

(a) Subject to the terms and conditions of this
Article X, Buyer shall, and shall cause the Company, jointly and severally, to,
indemnify Spar and each of its Affiliates, officers, directors, employees and
agents against, and hold them harmless from, any Losses suffered or incurred by
any such Indemnified Person (other than any relating to Taxes, for which
indemnification provisions are set forth in Section 10.3) to the extent arising
from, (a) if the Closing occurs, any breach of any representation or warranty
(both of which for the purposes of determining Losses for indemnification
purposes shall exclude any materiality and knowledge qualifiers contained
therein) of Buyer contained in this Agreement or in any certificate, instrument
or other document delivered pursuant hereto or (b) any breach of any covenant of
Buyer contained in this Agreement requiring performance after the Closing Date
or (c) any liability or financial obligation of any nature, whether known or
unknown or fixed or contingent in nature, relating to the business and
operations of the Company on or after the Closing Date (including, without
limitation, any loss related in any manner to employment decisions or
terminations by the Company after the Closing).

(b) The Company shall pay to Spar all amounts received
with respect to the items set forth in Section 10.1(d) above.

10.3 TAX INDEMNIFICATION.

(a) Subject to the terms and conditions of this
Article X, Spar shall indemnify Buyer and its Affiliates (including the Company)
and each of their respective officers, directors, employees and agents and hold
them harmless from (i) all liability for Taxes of the Company incurred during
the Pre-Closing Tax Period (as defined in Section 10.3(b)) and (ii) all
liability for reasonable legal fees and expenses incurred with respect to any
item indemnified pursuant to clause (i).

(b) For purposes of this Agreement, "Pre-Closing Tax
Period" shall mean any Tax period ending prior to or on the Closing Date
(including, as defined below, any Short Period or Apportioned Short Period). In
order to appropriately apportion any Taxes relating to a period that includes
(but that would not, but for this Section, close on) the Closing Date, Spar and
the Buyer will, to the extent permitted by applicable law, elect with the
relevant Governmental Authority to treat for all purposes the Closing Date as
the last day of a Tax period of Holdings and the Subsidiaries, and such period
shall be treated as a "Short Period." In any case where applicable law does not
permit Holdings and the Subsidiaries to treat the Closing Date as the last day
of a Short Period, then for purposes of this Agreement, the portion of Taxes
attributable to the operations of Holdings and the Subsidiaries for an
Apportioned Short Period (as defined below) shall be (i) in the case of Taxes
that are not based on income or gross receipts, the total amount of such Taxes
for the period in question multiplied by a fraction, the numerator of which is
the number of days in the Apportioned Short Period, and the denominator of which
is the total number of days in the entire period in question, and (ii) in the
case of Taxes that are based on income or gross receipts, the Taxes that would
be due with respect to the Apportioned Short Period, if such Period were a Short
Period. "Apportioned Short Period" means with respect to any Taxes imposed on
Holdings and the Subsidiaries on a periodic basis for which the Closing Date is
not the last day of a Short Period, the period of time beginning on the first
day of the actual Tax period in question that includes (but does not end on) the
Closing Date and ending on and including the Closing Date. All determinations
necessary to give effect to the foregoing allocations shall be made in a manner
consistent with the prior practice of Holdings and the Subsidiaries.

(c) Buyer agrees to indemnify Spar and its Affiliates for
any additional Tax owed by Spar and its Affiliates resulting from any
transaction initiated by the Company or Buyer not in the ordinary course of
business occurring on the Closing Date after Buyer's purchase of the Common
Stock of the Company.

(d) If a claim is made by the IRS that, if successful,
might result in an indemnity payment to either Spar or Buyer pursuant to this
Section 10.3, the party against whom the claim is asserted and who would be
entitled to receive an indemnity payment (the "Tax Indemnitee") shall promptly
notify the party against whom indemnification is sought (the "Tax Indemnitor")
in writing of such claim (a "Tax Claim"). If notice of a Tax Claim is not given
to the Tax Indemnitor within a sufficient

period of time to allow the Tax Indemnitor to effectively contest such Tax Claim
taking into account the facts and circumstances with respect to such Tax Claim,
the Tax Indemnitor shall not be liable to the Tax Indemnitee to the extent that
the Tax Indemnitor's ability to effectively contest such Tax Claim is actually
prejudiced as a result thereof.

(e) With respect to any Tax Claim, the Tax Indemnitor
shall control all proceedings taken in connection with such Tax Claim
(including, without limitation, selection of counsel) and, without limiting the
foregoing, may in its sole discretion (and at its sole cost and expense) pursue
or forego any and all administrative appeals, proceedings, hearings, and
conferences with any Governmental Authority with respect thereto and may, in its
sole discretion, either pay the Tax claimed and ▇▇▇ for a refund where
applicable law permits such refund suits or contest the Tax Claim in any
permissible manner. The Tax Indemnitee, and each of its Affiliates, shall
cooperate with the Tax Indemnitor in contesting any Tax Claim, which cooperation
shall include, without limitation, the retention and (upon the Tax Indemnitor's
request) the provision to the Tax Indemnitor of Records and information which
are reasonably relevant to such Tax Claim, and making employees available on a
mutually convenient basis to provide additional information or explanation of
any material provided hereunder or to testify at proceedings relating to such
Tax Claim.

(f) In no case shall the Tax Indemnitee settle or
otherwise compromise any Tax Claim that might result in an indemnity payment
without the Tax Indemnitor's prior written consent, which consent shall not be
unreasonably withheld.

10.4 LOSSES NET OF INSURANCE, ETC.

(a) The amount of any Loss or Tax for which
indemnification is provided under this Article X shall be net of any (i) any
related reserves (excluding reserves related to SGA), (ii) any Tax refund or Tax
benefit item not reflected on the Balance Sheet that is payable to the Company
and (iii) all amounts recovered or recoverable by the Indemnified Person under
insurance policies with respect to such Loss or Tax and shall be (x) increased
to take account of any net actual Tax cost incurred by the Indemnified Person
arising from the receipt of indemnity payments hereunder (grossed up for such
increase) and (y) reduced to take account of any actual net tax benefit realized
by the Indemnified Person arising from the incurrence or payment of any such
Loss or Tax. In computing the amount of any such Tax cost or Tax benefit, the
Indemnified Party shall be deemed to recognize all other items of income, gain,
loss, deduction or credit before recognizing any item arising from the receipt
of any indemnity payment hereunder or the incurrence or payment of any
indemnified Loss or Tax.

(b) If the Indemnifying Person makes any payment under
this Article X in respect of any Losses, the Indemnifying Person shall be
subrogated, to the extent of such payment, to the rights of the Indemnified
Person against any insurer or third party with respect to such Losses.

(c) Notwithstanding anything to the contrary elsewhere in
this Agreement, no Indemnifying Person shall, in any event, be liable to the
other party for any consequential damages, including, but not limited to, loss
of revenue or income, cost of capital, diminution in value or loss of business
reputation or opportunity relating to the breach or alleged breach of this
Agreement. Each party agrees that it will not seek punitive damages as to any
matter under, relating to or arising out of the transactions contemplated by
this Agreement.

(d) The parties hereto agree that the indemnification
provisions of this Article X are intended to provide the exclusive remedy as to
all Losses either may incur arising from, or relating to the transactions
contemplated hereby and each party hereby waives, to the extent they may do so,
any other rights or remedies that may arise under any applicable statute, rule
or regulation.

10.5 PROCEDURES RELATING TO INDEMNIFICATION (OTHER THAN UNDER
SECTION 10.3).

(a) In order for an Indemnified Person to be entitled to
any indemnification provided for under this Agreement (other than under
Section 10.3) in respect of, arising out of or involving a claim or demand made
by any Person against the Indemnified Person (a "Third Party Claim"), such
Indemnified Person must notify the Indemnifying Person in writing, and in
reasonable detail, of the Third Party Claim within 30 Business Days after
receipt by such Indemnified Person of written notice of the Third Party Claim;
PROVIDED, HOWEVER, that failure to give such notification shall not affect the
indemnification provided hereunder except to the extent the Indemnifying Person
shall have been actually prejudiced as a result of such failure (except that the
Indemnifying Person shall not be liable for any Losses incurred during the
period in which the Indemnified Person failed to give such notice). Thereafter,
the Indemnified Person shall deliver to the Indemnifying Person, within five
Business Days after the Indemnified Person's receipt thereof, copies of all
notices and documents (including court papers) received by the Indemnified
Person relating to the Third Party Claim.

(b) If a Third Party Claim is made against an Indemnified
Person, the Indemnifying Person will be entitled to participate in the defense
thereof and, if it so chooses, to assume the defense thereof with counsel
selected by the Indemnifying Person. Should the Indemnifying Person so elect to
assume the defense of a Third Party Claim, the Indemnifying Person will not be
liable to the Indemnified Person for legal fees and expenses subsequently
incurred by the Indemnified Person in connection with the defense thereof. If
the Indemnifying Person assumes such defense, the Indemnified Person shall have
the right to participate in the defense thereof and to employ counsel, at its
own expense, separate from the counsel employed by the Indemnifying Person, it
being understood that the Indemnifying Person shall control such defense. The
Indemnifying Person shall be liable for the fees and expenses of counsel
employed by the Indemnified Person for any period during which the Indemnifying
Person has not

assumed the defense thereof (other than during any period in which the
Indemnified Person shall have failed to give notice of the Third Party Claim as
provided above).

(c) If the Indemnifying Person chooses to defend or
prosecute any Third Party Claim, all parties hereto shall cooperate in the
defense or prosecution thereof. Such cooperation shall include the retention
and (upon the Indemnifying Person's request) the provision to the Indemnifying
Person of Records and information which are reasonably relevant to such Third
Party Claim, and making employees available on a mutually convenient basis to
provide additional information and explanation of any material provided
hereunder.

(d) Whether or not the Indemnifying Person shall have
assumed the defense of a Third Party Claim, the Indemnified Person shall not
admit any liability with respect to, or settle, compromise or discharge, such
Third Party Claim without the Indemnifying Person's prior written consent (which
consent shall not be unreasonably withheld). All Tax Claims (as defined in
Section 10.3) shall be governed by Section 10.3.

(e) In order for Buyer to be entitled to any
indemnification provided for in this Agreement in connection with the Satellite
Global Access Division matter set forth on Section 10.1(d)(iii), Buyer shall
first consult with Spar's representative and Spar shall, in its sole discretion,
have the right to require the Company to exercise any applicable rights under
that certain Irrevocable Letter of Credit by and between Royal Bank of Canada
and NSI Communication Systems Inc. dated June 26, 1998, in lieu of
indemnification by Spar. Buyer shall cause the Company to provide Spar's
representative with office space at the Company's headquarters.

10.6 SURVIVAL OF REPRESENTATIONS; TERMINATION OF INDEMNIFICATION.
The representations, warranties and covenants in this Agreement and in any other
document delivered in connection herewith shall survive the Closing for a period
of fifteen (15) months (excluding the representations and warranties in
Section 3.12, which shall expire at the Closing). The obligation to indemnify
and hold harmless shall not terminate with respect to any item as to which the
Person to be indemnified shall have, before the expiration of such fifteen
(15) month period, previously made a claim by delivering a written notice
(stating in reasonable detail the basis of such claim) to the Indemnifying
Person. The obligations to indemnify and hold harmless a Person pursuant to
Section 10.1(d) shall survive the Closing indefinitely and pursuant to
Section 10.3 shall survive for the applicable statute of limitations.

ARTICLE XI

COVENANT NOT TO COMPETE

11.1 COVENANT NOT TO COMPETE. Until three years after Closing Date,
Spar covenants and agrees with Buyer that, it will not, either directly or
indirectly itself or through a wholly or partially owned subsidiary, compete or
engage in the design,

manufacturing and marketing of satellite modems and earth stations, digital
audio and data receivers, digital set top boxes and broadband PC receiver cards,
as conducted by the Company as of the Closing Date throughout the world (the
"Restricted Territory").

11.2 CONSIDERATION. Spar acknowledges and agrees that it will
receive a direct, material and substantial benefit from the consummation of the
transactions contemplated by this Agreement and that such direct, material and
substantial benefit is good and sufficient consideration to it for the
performance of its obligations under this Article XI.

11.3 REASONABLENESS OF COVENANT. Spar recognizes and acknowledges
that the Covenant Not to Compete together with Spar's performance thereunder is
necessary in order to protect and maintain the proprietary interests and other
legitimate business interests of Buyer and to afford Buyer the benefit of its
bargain under this Agreement and that such covenants are reasonable in all
respects.

11.4 SEPARATE COVENANTS. The parties intend for the covenants
contained in this Article XI to comply with the provisions of the laws of each
state in the United States and to be construed as a series of separate
covenants, one for each city, county, market area or business area in the
Restricted Territory, for each year. Except for geographic coverage, each such
covenant shall be deemed identical in terms to the covenants contained herein.

11.5 EQUITABLE RELIEF. The parties hereto agree that the
obligations contained in this Article XI are of a special and unique character
which gives them a peculiar value, and that Buyer may not be reasonably or
adequately compensated in damages in an action at law in the event that Spar
breaches such obligations. Spar therefore expressly agrees that Buyer shall be
entitled to preliminary and permanent injunctive and other equitable relief to
prevent a breach of said obligations, in addition to any other rights and
remedies that Buyer may have.

ARTICLE XII

CERTAIN CLOSING AND POST-CLOSING MATTERS

12.1 TAX MATTERS.

(a) Other than income Tax Returns with respect to periods
for which a unitary or combined income Tax Return of Spar will include the
operations of Holdings and/or the Subsidiaries, Buyer shall prepare or cause to
be prepared and file or cause to be filed all Tax Returns of Holdings and the
Subsidiaries for Tax periods ending prior to the Closing Date or for a Short
Period (as defined in Section 10.3(b)) and which are due after the Closing Date.
Buyer shall file such Tax Returns consistent with the manner in which Spar
previously filed such Tax Returns and shall permit Spar to review and comment on
each such Tax Return prior to filing and shall make such revisions to such Tax
Returns as are reasonably requested by Spar. Spar shall reimburse Buyer for

Taxes of Holdings and the Subsidiaries with respect to such periods within
fifteen (15) business days after payment by Buyer, Holdings, or the Subsidiaries
of such Taxes to the extent such Taxes are not accrued on the books of Holdings
and the Subsidiaries on the Closing Date.

(b) Buyer shall prepare or cause to be prepared and file
or cause to be filed any Tax Returns of Holdings and the Subsidiaries for Tax
periods which begin before the Closing Date and end after the Closing Date.
Spar shall pay to Buyer within fifteen (15) business days after the date on
which Taxes are paid with respect to such period an amount equal to the portion
of such Taxes which relates to the Apportioned Short Period (as defined and
determined under Section 10.3(b)) to the extent such Taxes are not accrued on
the books of Holdings and the Subsidiaries on the Closing Date.

(c) Spar, Buyer, Holdings and the Subsidiaries shall
cooperate fully, as and to the extent requested by the other party, in
connection with filing of Tax Returns pursuant to this Section 12.1 and any
audit, litigation or other proceeding with respect to Taxes. Such cooperation
shall include the retention and (upon the other party's request) the provision
of records and information which are reasonably relevant to any such Tax
Returns, audit, litigation or other proceeding and making employees available on
a mutually convenient basis to provide additional information and explanation of
any material provided hereunder. Buyer shall cooperate fully as reasonably
requested by Spar in connection with the filing of the unitary or combined Tax
Return of Spar referred to in the first clause of Section 12.1(a) above.

(d) All transfer, documentary, sales, use, stamp,
registration, value added and other such Taxes and fees (including any penalties
and interest) incurred in connection with this Agreement shall be borne and paid
by Spar when due.

(e) Any Tax sharing agreement between Spar and the
Company will be terminated as of the close of business on the Closing Date and
will have no further effect for any taxable year (whether the current year, a
future year, or any past year). Upon termination of any such Tax sharing
agreement, Spar, Holdings and the Subsidiaries shall make any payments required
under such agreement with respect to any Taxes covered by such agreement and
accrued as of the close of business on the Closing Date.

12.2 ACCESS TO FORMER BUSINESS RECORDS. For a period of five (5)
years following the Closing, Buyer will retain all Records of Holdings and the
Subsidiaries arising prior to the Closing in accordance with the Buyer's then
existing records retention policies and/or procedures; provided, however, in the
case of Records relating to Taxes and Tax Returns of Holdings and the
Subsidiaries, the period shall be six (6) years or, if notified by Spar, until
the termination of any applicable statute of limitations. During such period,
Buyer will afford authorized representatives of Spar access to all of such
Records at reasonable times and during normal business hours at the principal
business

office of Holdings, or at such other location or locations at which such Records
may be stored or maintained from time to time, and will permit such
representatives to make abstracts from, or copies of, any of such Records, or to
obtain temporary possession of any thereof as may be reasonably required by Spar
at Spar's sole cost and expense. During such period, Buyer will, at Spar's
expense, cooperate with Spar in furnishing information, evidence, testimony, and
other reasonable assistance in connection with any action, proceeding, or
investigation relating to the business of Holdings prior to the Closing.

ARTICLE XIII

TERMINATION

13.1 TERMINATION. Anything contained herein to the contrary
notwithstanding, this Agreement may be terminated and the transactions
contemplated hereby abandoned at any time prior to the Closing Date:

(a) by mutual written consent of Spar and Buyer;

(b) by Spar if any of the conditions set forth in
Sections 8.1 or 8.3 shall have become incapable of fulfillment, and shall not
have been waived by Spar;

(c) by Buyer if any of the conditions set forth in
Sections 8.1 or 8.2 shall have become incapable of fulfillment, and shall not
have been waived by Buyer; or

(d) by either party hereto, if the Closing does not occur
on or prior to November 30, 1998, unless the delay is caused by the failure of
Spar or Buyer to fulfill their respective obligations hereunder.

13.2 NOTICE OF TERMINATION. In the event of termination by Spar or
Buyer pursuant to this Article XIII, written notice thereof shall forthwith be
given to the other party and the transactions contemplated by this Agreement
shall be terminated, without further action by either party. If the
transactions contemplated by this Agreement are terminated as provided herein:

(a) Buyer shall promptly return all documents and copies
and other material received directly or indirectly from Spar or the Company
relating to the transactions contemplated hereby, whether so obtained before or
after the execution hereof, to Spar; and

(b) all confidential information received by Buyer with
respect to the businesses of Spar and the Company shall be treated in accordance
with the Confidentiality Agreement which shall remain in full force and effect
notwithstanding the termination of this Agreement.

13.3 EFFECT OF TERMINATION. If this Agreement is terminated and the
transactions contemplated hereby are abandoned as described in this
Article XIII, this Agreement shall become void and of no further force and
effect, except for the provisions of (i) Section 7.1 relating to the obligation
of Buyer to keep confidential certain information and data obtained by it,
(ii) Section 14.4 relating to certain expenses, (iii) Section 14.5 relating to
attorneys' fees and expenses, (iv) Section 5.2 relating to publicity,
(v) Section 14.10 relating to finder's fees and broker's fees and (vi) this
Article XIII; provided, however, that if any party hereto willfully fails to
perform its obligations herein or willfully neglects to perform acts that are
necessary to the fulfillment of conditions hereof or willfully prevents the
fulfillment of a condition hereof, the other party may seek any available legal
and equitable remedies in addition to those provided herein.

ARTICLE XIV

GENERAL PROVISIONS

14.1 NOTICES. All notices or other communications required or
permitted to be given hereunder shall be in writing and shall be delivered by
hand or sent telecopy, or sent, postage prepaid, by registered, certified or
express mail, or reputable overnight courier service and shall be deemed given
when so delivered by hand or telecopied with electronic confirmation, or if
mailed, three days after mailing (one Business Day in the case of express mail
or overnight courier service), as follows:

(i) if to Buyer:

Radyne Corp.
▇▇▇▇ ▇▇▇▇▇ ▇▇▇▇ ▇▇▇▇▇▇
▇▇▇▇▇▇▇, ▇▇▇▇▇▇▇ ▇▇▇▇▇
Attention: ▇▇. ▇▇▇▇▇▇ ▇. Fitting
Fax: (▇▇▇) ▇▇▇-▇▇▇▇

with a copy to:

▇▇▇▇▇▇ & ▇▇▇▇▇▇▇ LLP
▇▇▇ ▇▇▇▇ ▇▇▇▇▇▇
▇▇▇ ▇▇▇▇, ▇▇▇ ▇▇▇▇ ▇▇▇▇▇
Attention: ▇▇▇▇ ▇. ▇▇▇▇, III, Esq.
Fax: (▇▇▇) ▇▇▇-▇▇▇▇

(ii) if to Spar:

Spar Aerospace Limited
▇▇▇ ▇▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇, ▇▇▇▇▇ ▇▇▇▇
▇▇▇▇▇▇▇, ▇▇▇▇▇▇▇ ▇▇▇ ▇▇▇
▇▇▇▇▇▇
Attention: ▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇
General Counsel
Fax: (▇▇▇) ▇▇▇-▇▇▇▇

with a copy to:

▇▇▇▇▇▇, ▇▇▇▇ & ▇▇▇▇▇▇▇▇ LLP
Jamboree Center, ▇ ▇▇▇▇ ▇▇▇▇▇
▇▇▇▇▇▇, ▇▇▇▇▇▇▇▇▇▇ ▇▇▇▇▇-▇▇▇▇
Attention: ▇▇▇▇▇▇ ▇. ▇▇▇▇, Esq.
Fax: (▇▇▇) ▇▇▇-▇▇▇▇

14.2 ASSIGNMENT. This Agreement and the rights and obligations
hereunder shall not be assignable or transferable (including by operation of law
in connection with a merger, or sale of substantially all the assets, of Buyer)
by Buyer prior to the Closing, without the prior written consent of Spar.

14.3 NO THIRD-PARTY BENEFICIARIES. Except as provided in Article X
as to Indemnified Persons, this Agreement is for the sole benefit of the parties
hereto and their permitted assigns and nothing herein expressed or implied shall
give or be construed to give to any person or entity, other than the parties
hereto and such assigns, any legal or equitable rights hereunder.

14.4 EXPENSES. Whether or not the transactions contemplated hereby
are consummated, and except as otherwise provided in this Agreement, all fees,
costs and expenses incurred in connection with this Agreement and the
transactions contemplated hereby shall be paid by the party incurring such fees,
costs or expenses.

14.5 ATTORNEYS' FEES. Should any litigation be commenced concerning
this Agreement or the rights and duties of any party with respect to it, the
party prevailing shall be entitled, in addition to such other relief as may be
granted, to a reasonable sum for such party's attorneys' fees and expenses
determined by the court in such litigation or in a separate action brought for
that purpose.

14.6 AMENDMENTS. No amendment to this Agreement shall be effective
unless it shall be in writing and signed by both parties hereto.

14.7 INTERPRETATION; EXHIBITS AND SCHEDULES. The headings contained
in this Agreement, in any Exhibit or Schedule hereto and in the table of
contents to this Agreement, are for reference purposes only and shall not affect
in any way the meaning

or interpretation of this Agreement. Any matter disclosed in one Schedule
hereto shall be deemed incorporated by reference into each other Schedule hereto
and disclosed in each such Schedule. All Exhibits and Schedules annexed hereto
or referred to herein are hereby incorporated in and made a part of this
Agreement as if set forth in full herein. Any capitalized terms used in any
Schedule or Exhibit, but not otherwise defined therein, shall have the meaning
as defined in this Agreement.

14.8 COUNTERPARTS. This Agreement may be executed in counterparts,
each of which shall be deemed an original, and all of which taken together shall
constitute one and the same instrument.

14.9 ENTIRE AGREEMENT. This Agreement and the Confidentiality
Agreement contain the entire agreement and understanding between the parties
hereto with respect to the subject matter hereof and supersede all prior oral
and written agreements and understandings relating to the subject matter hereof.

14.10 FINDERS AND BROKERS. Spar represents and warrants that the
only broker or finder that has acted for Spar in connection with this Agreement
or the transactions contemplated hereby or that may be entitled to any brokerage
fee, finder's fee or commission in respect thereof is BT Alex. ▇▇▇▇▇
Incorporated and that Spar will pay all fees or commissions which may be payable
to BT Alex. ▇▇▇▇▇ Incorporated. Buyer represents and warrants that it has
retained no such brokers or finders in connection with this Agreement or the
transactions contemplated hereby and that no such party is entitled to any such
fee or commission from Buyer in connection with this Agreement or the
transactions contemplated hereby.

14.11 SEVERABILITY. If any provision of this Agreement or the
application of any such provision to any person or circumstance shall be held
invalid, illegal or unenforceable in any respect by a court of competent
jurisdiction, such invalidity, illegality or unenforceability shall not affect
any other provision hereof.

14.12 GOVERNING LAW. This Agreement shall be governed by and
construed in accordance with the internal laws of the State of California
applicable to agreements made and to be performed entirely within such State,
without regard to the conflicts of law principles of such State.

14.13 CONSENT TO JURISDICTION: FORUM SELECTION. The parties agree
that all actions or proceedings arising in connection with this Agreement shall
be tried and litigated exclusively in the Federal courts located in the County
of Orange or the County of San Diego, State of California. The aforementioned
choice of venue is intended by the parties to be mandatory and not permissive in
nature, thereby precluding the possibility of litigation between the parties
with respect to or arising out of this Agreement in any jurisdiction other than
those specified in this paragraph. Each party hereby waives any right it may
have to assert the doctrine of forum non conveniens or similar doctrine or to
object to venue with respect to any proceeding brought in accordance with this
paragraph, and stipulates that the Federal courts located in the County of
Orange or the County of

San Diego, State of California shall have in personam jurisdiction and venue
over each of them for the purpose of litigating any dispute, controversy or
proceeding arising out of or related to this Agreement. Each party hereby
authorizes and accepts service of process sufficient for personal jurisdiction
in any action against it as contemplated by this paragraph by registered or
certified mail, return receipt requested, postage prepaid, to its address for
the giving of notices as set forth in this Agreement, or in the manner set forth
in Section 14.1 of this Agreement for the giving of notice. Any final judgment
rendered against a party in any action or proceeding shall be conclusive as to
the subject of such final judgment and may be enforced in other jurisdictions in
any manner provided by law.

14.14 JURY WAIVER. SPAR AND BUYER EACH HEREBY WAIVE TRIAL BY JURY IN
ANY JUDICIAL PROCEEDING INVOLVING ANY MATTER IN ANY WAY ARISING OUT OF OR
RELATED TO THIS AGREEMENT OR THE INSTRUMENTS TO BE EXECUTED IN CONNECTION
HEREWITH.

IN WITNESS WHEREOF, the parties have caused this Agreement to be duly
executed as of the date first written above.

SPAR AEROSPACE LIMITED

By:
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Name:
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Title:
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RADYNE CORP.

By:
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Name:
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Title:
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STOCK PURCHASE AGREEMENT BY AND BETWEEN SPAR AEROSPACE LIMITED AND RADYNE CORP. AUGUST 28, 1998 TABLE OF CONTENTS

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