ASSET PURCHASE AGREEMENT

AGREEMENT  made this  12th day of April,  2001  ("Agreement"),  between  Gentner
Communications  Corporation (the "Seller"),  a Utah  corporation  having a usual
place of  business  at 1825  Research  Way,  Salt Lake  City,  UT 84119 and Burk
Technology, Inc. (the "Buyer"), a Massachusetts corporation having a usual place
of business at 7 Beaver Brook Road, Littleton, MA 01460

BACKGROUND:

Seller desires to sell Seller's Remote Facilities  Management  Product Line (the
"Business")  to Buyer,  and Buyer  desires to  purchase  the  Business,  for the
consideration  hereinafter  specified  and upon terms and  conditions  set forth
herein.

NOW,  THEREFORE,  for  and in  consideration  of the  promises  and  the  mutual
covenants, agreements,  representations and warranties herein contained, and the
mutual benefits to be derived  herefrom and from the  transactions  provided for
herein, the parties, intending to be legally bound hereby, agree as follows:

SECTION 1           TRANSFER OF BUSINESS, PROPERTIES, RIGHTS, AND ASSETS.

1.1 TRANSFER OF ASSETS.  Subject to the  provisions  of this  Agreement,  Seller
agrees to sell and Buyer  agrees to  purchase  at the  Closing  (as  defined  in
Section 2 hereof),  for the  specific  consideration  assigned  to each asset at
Schedule  1.1 hereof,  all of Seller's  right,  title and interest in and to the
following  properties,  rights,  and  assets  of  Seller,  free and clear of all
mortgages,  liens, security interests,  pledges, charges and other encumbrances:
(a) Seller's tooling, dies, spare parts, accessories and other tangible personal
property owned by Seller and predominantly utilized in the Business as listed or
referred to on Schedule 1.1(a) ( the "Tangible Personal Property");
(b)  Finished   goods  as  listed  or  referred  to  on  Schedule   1.1(b)(  the
"Inventory");
(c) All outstanding sales orders,  bids,  contracts,  and sales proposals of the
Business to the extent  incurred in the  ordinary  course of  business,  and not
shipped prior to Closing Date, as listed or referred to on Schedule 1.1 (c) (the
"Assigned Customer Orders");


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(d) Those  certain  United States  patents,  patent  applications,  trade names,
service marks, and trademarks as listed or referred to on Schedule 1.1 (d);
(e) All marketing  displays,  computer software,  all documents and source codes
with  respect  to such  software,  technical  developments,  technical  designs,
drawings,  specifications,  manufacturing  know-how,  technical bulletins,  shop
rights,  and  technology  licenses  with  respect to the  Business  as listed or
referred to on Schedule 1.1 (e);
(f) All Sales  Distribution  Agreements,  governmental  licenses  and permits as
listed or referred to on Schedule 1.1 (f);
(g) All of Seller's  intangible  personal  property  relating  to the  Business,
including without  limitation books,  customer lists,  distribution  agreements,
license  agreements,  vendor  lists,  records,  customer and vendor  reports and
records,  inventory  and product cost records and reports,  and other  operating
reports for the  thirty-six  months  ending with the  Closing  Date,  as defined
below.

(All of the  assets  referred  to  paragraphs  (a)  through  (g) above  shall be
collectively referred to below as the "Acquired Assets".)

1.2 EXCLUDED ASSETS.  Except as otherwise provided for in this Agreement,  Buyer
shall not  purchase and Seller  shall  retain all of Seller's  right,  title and
interest in and to the following:
        (a) Any cash on hand or cash equivalents associated with the Business;
        (b)  Any  accounts  receivable,  credits,  or  refunds  of the  Business
resulting from goods shipped,or expenses incurred,  by Seller prior to the close
of Business on the Closing Date;
        (c) All  machinery and  equipment  related to the Business  which is not
listed or referred to in any of the Schedules referred to in Section l.1, above;
        (d) Any right, title or interest in the real property utilized by Seller
with respect to the Business; and
        (e) All finished  goods  inventory,  work in process,  and raw materials
associated with the business which are not listed or referred to in Schedule 1.1
(b), above. (Buyer may purchase these items at Seller's cost.)

1.3  CONSIDERATION.  For and in  consideration  of the  Acquired  Assets  of the
Business to be purchased and acquired by Buyer  hereunder,  BUYER  covenants and
agrees  as  provided  in  Section  1.4,  below,  to pay and  remit to  Seller an
aggregate  purchase  price (the  "Purchase  Price") of up to Three  Million  Two
Hundred Thousand Dollars ($3,200,000).




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1.4 PAYMENT OF CONSIDERATION. At the Closing:

(a)  Buyer will deliver to Seller :
        (i) the sum of Seven Hundred Fifty Thousand  Dollars  ($750,000) in cash
or its equivalent;
        (ii) a  non-negotiable  installment note from the Buyer to the Seller in
the  principal  amount of One  Million  Seven  Hundred  Fifty  Thousand  Dollars
($1,750,000)  with  interest  at the rate of nine  percent  (9%) per annum  (the
"Installment Note"). The Installment Note shall be substantially as appearing at
Exhibit A and will provide that all interest and principal  will be paid in full
on or before  the  expiration  of seven  years  with a right to prepay  all or a
portion thereof without penalty.  The Installment Note will be secured by all of
Buyer's assets  subject only to a first  security  interest of Buyer's lender as
evidenced by a Security Agreement substantially as appearing at Exhibit B;
        (iii) a  Commission  Agreement  substantially  in the form  attached  as
Exhibit C,  hereto  providing  that  Seller  will be  eligible  to receive up to
$700,000 under annual payments from Buyer upon Buyer achieving the sales results
specified in the Commission Agreement; and
        (iv) a  certificate  executed  by Buyer to the  effect  that,  except as
otherwise  stated  in such  certificate,  each of  Buyer's  representations  and
warranties  in this  Agreement  was accurate in all respects of the date of this
Agreement  and is accurate in all  respects as of the Closing Date as if made on
the Closing Date.

b)   Seller will deliver to Buyer:
        i) a  Non-Compete  Agreement  substantially  in the form of  Exhibit  D,
hereto;
        ii) a  certificate  executed  by Seller to the  effect  that,  except as
otherwise  stated in such  certificate,  each of  Seller's  representations  and
warranties  in this  Agreement  was accurate in all respects of the date of this
Agreement  and is accurate in all  respects as of the Closing Date as if made on
the Closing Date; and
        iii) a Bill of Sale substantially in the form of Exhibit E, hereto.

1.5 LIMITED ASSUMPTION OF LIABILITIES.

Except for the Assigned Customer Orders as specifically  provided in Section 1.1
(c), above and the assumption of warranty  responsibilities pursuant to Seller's



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covenant appearing in Section 9.1, below, Buyer does not and shall not assume or
be otherwise responsible for any liability or obligation of the Business arising
from or related to activities which occurred prior to the end of business on the
Closing date, including without limitation:
        (a) any debts,  liabilities,  obligations  or taxes with  respect to any
period   whether  known  or  unknown,   contingent   or  fixed,   liquidated  or
unliquidated;
        (b) litigation to which Seller is a party or subject to; or arising from
or  related to any  litigation  relating  to any  events,  occurrences  or facts
connected to the Seller, the Assets, the Business or Seller's  operations of the
Business or to which Seller is a party or subject;
        (c)  claims by  employees,  former  employees  or  retirees  of  Seller,
including  without  limitation,   those  relating  to  terms  or  conditions  of
employment  policies,  practices,  compensation,  medical  benefits,  benefit or
welfare plans or any other employment-related obligation;
        (d)  personal  injury or  property  damage  claims  whether  arising  by
negligence,  strict liability or otherwise,  including,  without limitation, any
products manufactured, fabricated, made, distributed or sold by Seller;
        (e) any compensation or benefits claims (including,  without limitation,
pension,  profit-sharing or vacation benefits) for services rendered for Seller;
or
        (f) Seller's  compliance with any applicable laws,  rules,  regulations,
ordinances  or orders of federal,  state or local laws,  the conduct of Seller's
operations, the Business, employment matters, Seller's operations or the Assets,
including,  without limitation, all applicable environmental,  health and safety
matters.
        (g) Seller's  warranty  responsibility  and any other claim or liability
arising from the Paxson  Communication  claim described in Schedule 3.11 of this
agreement.

(The foregoing collectively referred to as the "Excluded Liabilities").

With respect to the Assigned Customer Orders,  Buyer's obligations,  liabilities
and duties shall relate only to goods completed and shipped by Buyer.

1. 6 BULK SALES ACT WAIVER.  Buyer and Seller agree to waive compliance with the
provisions  of any  applicable  "Bulk Sales Laws",  but Seller hereby agrees and
undertakes to indemnify and hold harmless with respect of any claims of persons,
firms or entities (governmental or non-governmental) who would be entitled, as a
claimant  of Seller,  to assert a claim under any  applicable  "Bulk Sales Laws"
against Buyer or all or any part of the Assets sold to Buyer.



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1.7 SALES AND USE TAXES. Seller shall be responsible for paying any sales or use
taxes resulting from the sale of the Assets under this Agreement.

SECTION 2.  CLOSING.

2.1  CLOSING  DATE.  Both Parties  shall be relieved of any further  obligations
under this  Agreement if the Closing fails to occur on or before April 13, 2001.
The  Closing  of the  purchase  and sale  provided  for in this  Agreement  (the
"Closing" or "Closing  Date") shall be held at Buyer's  lending  institution  at
such time as Buyer's lender funds the Loan, or at such other place, date or time
as may be agreed upon in writing by the Parties.

2.2  TRANSFER OF ASSETS.  At the  Closing,  Seller  will  deliver or cause to be
delivered  to Buyer a Bill of Sale,  substantially  in the form as  appearing at
Exhibit E,  hereto,  transferring  to Buyer title to the  Acquired  Assets.  The
tangible  Acquired  Assets  shall be delivered  FOB Salt Lake City  packaged for
shipment.

2.3  FURTHER  ASSURANCES.  Seller  from time to time after the  Closing,  at the
request of Buyer and without  further  consideration,  will  execute and deliver
further  instruments  of transfer and  assignment  and take such other action as
Buyer may reasonably require to effectively transfer and assign to, and vest in,
Buyer title to each of the Acquired Assets.

SECTION 3.  REPRESENTATIONS AND WARRANTIES OF SELLER

3.1 DATE OF REPRESENTATIONS AND WARRANTIES. As of the date of this Agreement and
as of the Closing,  Seller makes the  representations  and  warranties  to Buyer
contained in this Section 3-- subject to the disclosure  schedules  accompanying
this Agreement.

3.2  ORGANIZATION  AND  QUALIFICATION  of SELLER.  Seller is a corporation  duly
organized,  validly existing and in good standing under the laws of the State Of
Utah,  with full power and authority to own or lease its  properties and conduct
its business in the manner and in the place where such  properties  are owned or
leased or such business is conducted.


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3.3  REQUISITE  CORPORATE  ACTION.  Seller has full power and authority to enter
into,  execute and deliver this  Agreement.  Seller has, or prior to the Closing
will have, taken all action,  corporate and otherwise,  which may be required by
its Articles of Incorporation  and By-Laws,  or by the laws of the State of Utah
to permit the  performance  of this  Agreement by Seller in accordance  with its
terms.

3.4 FINANCIAL  STATEMENTS.  Seller has delivered the financial statements listed
or referred to in Schedule 3.4.  Except as expressly  noted on Schedule 3.4: (i)
each of such financial  statements was prepared in accordance  with GAAP applied
on a basis consistent with prior periods, subject to a lack of footnotes and, in
the case of any Interim Financials,  year-end  adjustments  consisting of normal
closing  accruals;  (ii) each such balance  sheet fairly  presents the financial
condition of the Business as of its date; and (iii) each of such income and cash
flow  statements  fairly  presents a true,  complete,  and correct record of the
results of  operation  and cash  flows of the  Business  for the period  covered
thereby.

3.5  CONSENTS  AND  APPROVALS  OF  THIRD  PARTIES.   No  consent,   approval  or
authorization of; or declaration,  filing or registration  with, any third party
(including,   without  limitation,  any  governmental  or  regulatory  authority
pursuant to the Hart -Scott-Rodino Antitrust Improvements Act or any other State
or  federal  regulation,  any  distributor  pursuant  to any Sales  Distribution
Agreements,  or  development  partner  pursuant  to  any  Partnership  or  Joint
Development  Agreements)  is  required  in  connection  with the  execution  and
delivery  by  Seller  of this  Agreement  or the  performance  by  Seller of its
obligations hereunder,  except as listed or referred to in Schedule 3.5. Without
limiting the  foregoing,  Seller  specifically  represents and warrants that: i)
Seller is the sole General Partner under the Limited Partnerships; ii) the terms
of  Limited  Partnership  Agreements  for both  Limited  Partnerships  grant the
General  Partner  authority  to dissolve  the Limited  Partnerships  without the
approval of the Limited  Partners;  and iii) prior to, or as soon as  reasonably
practical following,  the Closing, the Limited Partnerships will be dissolved by
Seller according to such terms.

3.6  NO CONFLICT.  The execution, delivery and  performance of this Agreement by
Seller will not: (a) violate any  provision of the Articles of  Organization  or
By-laws of Seller;  (b) violate any federal law or any law of the State of Utah;
(c) violate or cause a default under any agreement, contract, instrument, order,
judgment or decision to which Seller is a party or by which it is bound;  or (d)
result in the  creation  of any  lien,  charge  or  encumbrance  upon any of the
Acquired  Assets of Seller  pursuant  to any  agreement,  contract,  instrument,



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order,  judgment or decision to which Seller is a party or by which it is bound,
except as listed or referred to in Schedule 3.6.

3.7  ASSIGNED  CUSTOMER ORDERS.  Schedule 3.7(which shall be delivered within 10
days of the Closing Date) contains:  i) a complete list of all Assigned Customer
Orders and open Sales Contracts to be transferred under this Agreement;  and ii)
a list of customers who purchased  equipment  with respect to the Business since
January 1, 1998 through the Closing  Date.  To Seller's  knowledge  there are no
threatened or impending  difficulties in Seller's  relationships with any of the
Assigned  Customer  Orders or customers  listed on Schedule 3.7. Seller does not
warrant that such relationships will continue.

3.8 INVENTORY. The finished goods inventory listed at Schedule 1.1 b) possess an
aggregate  cost of goods equal or greater in the dollar amount to the comparable
aggregate  cost of goods total with respect to the finished goods sold by Seller
in the Business in the last calendar quarter of 2000.

3.9  ABSENCE OF  UNDISCLOSED  OBLIGATIONS. Seller does not have any  material or
unusual  commitments  or  obligations  (absolute,  accrued or  contingent)  with
respect to any  Assigned  Customer  Orders  appearing at Schedule 3.7 that Buyer
will assume pursuant to this Agreement or with respect to the Acquired Assets or
Business,  which,  because of this  transaction,  would be  chargeable to Buyer.
Seller has performed in a good and  workmanlike  manner all work relating to the
finished goods inventory listed at Schedule 1.1 (b).

3.10  DISCLOSURE.  In connection  with the  negotiation  and preparation of this
Agreement,  Seller has prepared and  delivered to Buyer certain  information  as
listed or  referred  to on the  Disclosure  Schedule  dated  April 12,  2001 and
attached hereto as Schedule 3.10. To the best of Seller's  knowledge and belief,
such information  accurately and completely  states the facts appearing  therein
and discloses any facts that could materially alter the Business or the Acquired
Assets.

3.11 ACQUIRED ASSETS, ABSENCE OF LIENS. As of the Closing, Seller will have good
and marketable  title to all the Acquired Assets and none of the Acquired Assets
will be subject to any mortgage,  pledge,  lien,  conditional  sales  agreement,
security  interest,  encumbrance or other charge. All the operating Assets shall
be in good operating  condition and repair,  reasonable  wear and tear excepted,
for their present use in the  Business.  Seller has no knowledge of any material


                                      E-7


defect  in any of the  Acquired  Assets  being  purchased  by  Buyer,  except as
identified at Schedule 3.11.

3.12 COMPLIANCE WITH LAWS.  Seller has received no notice from any  governmental
authority  having  jurisdiction  to  enforce  any  laws,  rules  or  regulations
applicable  to the use of the Acquired  Assets or conduct of the  Business  with
respect to any  violation,  claim,  investigation  or asserted  violation of any
provision of any such laws, rules or regulations, and Seller has complied and is
in compliance  with all such laws,  rules and regulations  where  non-compliance
would  have a  material  adverse  effect  on the  Business.  To the  best of the
knowledge of Seller, no such violation, claim, or claim is threatened or pending
in respect of the Business or the Acquired Assets.

3.13 LEGAL  PROCEEDINGS.  Seller is not in violation of or in default  under any
judgment,  order or decree of any court,  governmental  authority or  arbitrator
applicable  to the Business or Acquired  Assets or Seller's  business  generally
which could  materially  impact the Business or the transaction  contemplated by
this Agreement.

3.14  BROKERAGE. No broker or finder has acted directly or indirectly for Seller
in connection with this Agreement or the transactions  contemplated  hereby, and
no such person is entitled to any broker or finder's fee or other  commission in
respect  thereto.  Seller  shall be solely  responsible  for the  payment of any
commission due to any such broker.

3.15  LIABILITIES.  To the best of  Seller's  knowledge,  there is no basis upon
which any third party could  recover  against Buyer in respect of a liability of
Seller  because  of this  Agreement  or the  transactions  contemplated  by this
Agreement.  Except as listed or referred to in Schedule  3.15,  Seller is not in
default in any material respect nor, to the best of Seller's knowledge, is there
any basis for any claim of default in any material respect by Seller,  under any
contract or other agreement made by or on behalf of the Business.

3.16  TAXES.  There are no liens against the Acquired  Assets for  nonpayment of
taxes,  and no basis exists for the filing of any liens upon the Acquired Assets
for non-payment of taxes.

3.17  INSURANCE POLICIES. All insurance currently carried by Seller with respect
to the Acquired  Assets  remains in full force and effect and premiums have been
timely paid. Seller has not been notified by any insurer of the existence of any
grounds for  cancellation  of any  insurance  policy or a reduction in coverage.


                                      E-8


Seller has maintained those levels of liability, products liability, and workers
compensation and casualty coverage insurance as set forth on Schedule 3.17.

3.18  EMPLOYMENT MATTERS.  Seller has complied in all material  aspects of laws,
rules and  regulations  relating to the employment of labor. At the date of this
Agreement  or in the  ordinary  course of  business  following  the date of this
Agreement, all obligations of Seller to its employees for compensation, vacation
pay and time, health and welfare plans qualified and non qualified  compensation
plans,  pensions, and severance obligations and liabilities to employees arising
by virtue of the actions  contemplated  in this  Agreement  will be satisfied by
Seller.

3.19  ENVIRONMENTAL MATTERS. Seller has obtained all permits, licenses and other
authorizations  which are required to be obtained by Seller for the operation of
the  Acquired  Assets  under  federal,  state and  local  laws  relating  to the
environment  and Seller has handled,  stored,  transported  where  failure to so
comply would  interfere with the operation of the Business,  and disposed of its
wastes,  toxic,  hazardous or  otherwise  relating to the  Acquired  Assets,  in
compliance with all such laws such that Buyer would not be prevented from moving
the Acquired Assets.

3.20 TRADEMARKS, PATENTS, INTELLECTUAL PROPERTY. Except as listed or referred to
in Schedule 3.21: i) there are no patents,  trademarks, trade names, copyrights,
or  other  intellectual  property  necessary  for  Buyer's  continuation  of the
Business as presently  conducted by Seller (the  "Intellectual  Property");  ii)
Seller owns or has the sole and exclusive right to use all Intellectual Property
and the consummation of the transactions contemplated by this Agreement will not
alter or impair any such right.;  iii) Seller is not in breach of any  agreement
or  license  relating  to the  Intellectual  Property;  iv) no claims  have been
asserted,  and to the knowledge of Seller,  no claims are pending,  by any party
regarding  use of the  Intellectual  Property;  and v) to the  best of  Seller's
knowledge no third party is infringing or wrongfully  utilizing the Intellectual
Property .

3.21 CUSTOMERS AND SUPPLIERS. Seller is not involved in any material controversy
or dispute with any of its customers or suppliers.

3.22  SPECIFIC  CHANGES  SINCE JULY 1, 2000.  Except as listed or referred to in
Schedule  3.22  since July 1, 2000 all sale  commitments  reflect  normal  gross
margins and there has not been any material and adverse  change in, or any other
circumstance  which may reasonably be expected to have a material adverse effect
upon, the Acquired Assets or the financial condition or conduct of the Business.


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SECTION 4.  REPRESENTATIONS AND WARRANTIES OF BUYER.

4.1 DATE OF REPRESENTATIONS AND WARRANTIES. As of the date of this Agreement and
as of the Closing,  Buyer makes the representations and warranties  contained in
this  Section  4--  subject  to  the  disclosure  schedules   accompanying  this
Agreement..

4.2  ORGANIZATION  AND  QUALIFICATION  OF  BUYER.  Buyer is a  corporation  duly
organized  and  validly   existing  under  the  laws  of  the   Commonwealth  of
Massachusetts  with full power and authority to enter into this Agreement and to
perform Buyer's obligations contained herein.

4.3  REQUISITE  CORPORATE  ACTION.  Buyer has taken all  action,  corporate  and
otherwise, which may be required by its Articles of Organization and By-Laws, to
permit the performance of this Agreement by Buyer in accordance with its terms.

4.4  CONSENTS  AND  APPROVALS  OF  THIRD  PARTIES.   No  consent,   approval  or
authorization of; or declaration,  filing or registration  with, any third party
(including,  without  limitation,  any law or regulation of the  Commonwealth of
Massachusetts, any distributor pursuant to any Buyer Distribution Agreements, or
development partner pursuant to any Partnership or Joint Development Agreements)
is required  in  connection  with the  execution  and  delivery by Buyer of this
Agreement or the  performance by Buyer of its obligations  hereunder,  except as
listed or referred to in Schedule 4.4.

4.5  NO CONFLICT.  The execution, delivery and  performance of this Agreement by
Buyer will not: (a) violate any  provision of the  Articles of  Organization  or
By-laws of Buyer; (b) violate any law of the Commonwealth of  Massachusetts;  or
(c) violate or cause a default under any agreement, contract, instrument, order,
judgment or  decision to which Buyer is a party or by which it is bound;  except
as listed or referred to in Schedule 4.5.

4.6  LEGAL PROCEEDINGS. There is no legal, administrative,  arbitration or other
action or proceeding or governmental investigation pending or threatened against
Buyer which, if adversely  determined,  could impair the performance by Buyer of
its obligations pursuant to this Agreement.



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4.7 BROKERAGE. No broker or finder has acted directly or indirectly for Buyer in
connection with this Agreement or the transactions  contemplated  hereby, and no
such person is entitled to any broker or  finder's  fee or other  commission  in
respect  thereto.  Buyer  shall be solely  responsible  for the  payment  of any
commission due to any such broker.

SECTION 5.  CONDITIONS PRECEDENT TO BUYER'S OBLIGATION TO CLOSE.

The  obligations of Buyer under this  Agreement to consummate  the  transactions
contemplated  hereby  shall be  subject  to the  satisfaction,  on or before the
Closing, of the following conditions:

5.1 REPRESENTATIONS AND WARRANTIES. The representations and warranties of Seller
contained  in  Section  3  hereof  shall be true and  accurate  in all  material
respects  as of the  date of  Closing  with  the  same  effect  as  though  such
representations  and  warranties had been made again and reaffirmed on and as of
the Closing.  Where such  representations and warranties include a "materiality"
qualification, they shall be true and accurate in all respects as of the date of
Closing with the same effect as though such  representations  and warranties had
been made again and reaffirmed on and as of the Closing.

5.2  PERFORMANCE  OF COVENANTS.  Seller shall have performed and complied in all
material respects with each and every covenant, agreement and condition required
by this Agreement to be performed or complied with by it prior to or on the date
of Closing.

5.3 NO GOVERNMENT OR OTHER  PROCEEDING OR  LITIGATION.  No order of any court or
administrative  agency  shall be in effect  which  restrains  or  prohibits  the
transactions contemplated by this Agreement, and no suit, action, investigation,
inquiry or proceeding by any governmental  body or legislative or administrative
proceeding  by any person or entity  shall have been  instituted  or  threatened
which  questions the validity or legality of the  transactions  contemplated  by
this Agreement.

5.4 ABSENCE OF  CHANGES.  There shall not have been,  or  threatened  to be, any
material  damage to or loss or destruction of any of the Acquired  Assets or any
material adverse change in the financial condition, or operation of the Business
or  imposition  of any  laws,  rules,  or  regulations  which  would  materially
adversely affect the financial condition,  operation of the Business or Acquired
Assets not previously disclosed to Buyer in writing.



                                      E-11


5.5 COMPLIANCE WITH  AGREEMENT.  Seller shall have performed and complied in all
material  respects with all of Seller's  obligations  under this Agreement which
are to be performed or complied with by Seller on or prior to the Closing Date.

5.6 BOARD OF DIRECTOR  APPROVAL.  Seller shall have  obtained  approval from the
Board of Directions  and shall have  delivered a certificate of the Secretary of
Seller setting forth a resolution of Seller's Board of Directors authorizing the
execution and delivery of this  Agreement and the  performance  by Seller of the
transactions contemplated by this Agreement.

5.7 CROWN INTERNATIONAL APPROVAL. With Seller's assistance and permission, Buyer
shall have  obtained an  agreement  with Crown  International,  Inc.  which will
result in Buyer  succeeding to  substantially  similar rights and obligations as
presently held by Seller under the so-called " Crown International OEM Proposal"
dated on or about July 12, 1999.

SECTION 6.  CONDITIONS PRECEDENT TO SELLER'S OBLIGATION TO CLOSE.

The  obligations of Seller under this  Agreement to consummate the  transactions
contemplated  hereby  shall be  subject  to the  satisfaction,  on or before the
Closing, of the following conditions;

6.1 REPRESENTATIONS AND WARRANTIES.  The representations and warranties of Buyer
contained  in  Section  4  hereof  shall be true and  accurate  in all  material
respects  as of the  date of  Closing  with  the  same  effect  as  though  such
representations  and  warranties had been made again and reaffirmed on and as of
the Closing.  Where such  representations and warranties include a "materiality"
qualification, they shall be true and accurate in all respects as of the date of
Closing with the same effect as though such  representations  and warranties had
been made again and reaffirmed on and as of the Closing.

6.2  PERFORMANCE  OF COVENANTS.  Buyer shall have  performed and complied in all
material respects with each and every covenant, agreement and condition required
by this Agreement to be performed or complied with by it prior to or on the date
of Closing.


                                      E-12



6.3  NO GOVERNMENT OR OTHER PROCEEDING OR  LITIGATION.  No order of any court or
administrative  agency  shall be in effect  which  restrains  or  prohibits  the
transactions contemplated by this Agreement, and no suit, action, investigation,
inquiry or proceeding by any governmental  body or legislative or administrative
proceeding  by any person or entity  shall have been  instituted  or  threatened
which  questions the validity or legality of the  transactions  contemplated  by
this Agreement.

6.4  COMPLIANCE WITH  AGREEMENT.  Buyer shall have performed and complied in all
material respects with all of Buyer's obligations under this Agreement which are
to be performed or complied with by Buyer on or prior to the Closing Date.

6.5  BOARD OF DIRECTOR APPROVAL. Buyer shall have delivered a certificate of the
Clerk or  Secretary of Buyer  setting  forth a  resolution  of Buyer's  Board of
Directors  authorizing  the  execution  and delivery of this  Agreement  and the
performance by Buyer of the transactions contemplated by this Agreement.

SECTION 7.  TERMINATION AND ABANDONMENT.

7.1  TERMINATION. This Agreement may be terminated and the purchase and sale and
the other transaction  provided for by this Agreement may be abandoned,  without
liability  on the part of either  Party to the other,  on or before the  Closing
Date:
        (a) By mutual written consent of Buyer and Seller;
        (b) By Buyer,  if any of the  conditions of Section 5 of this  Agreement
have not been satisfied on or prior to the Closing Date and have not been waived
by Buyer in writing; or
        (c) By Seller,  if any of the  conditions of Section 6 of this Agreement
have not been satisfied on or prior to the Closing Date and have not been waived
by Seller in writing.
        (d) By either  Party if the  financial  commitment  or funding  does not
occur prior to the time limits specified in Section 2.1 of this Agreement.

7.2 NOTICE OF TERMINATION. In the event of termination and abandonment by either
Party as provided in Section 7.1 hereof,  prompt  written  notice  thereof shall
forthwith be given to the other Party.

7.3 EFFECT OF TERMINATION.  After  termination of this Agreement as described in
Section 7.1 above:



                                      E-13




        (a) Each Party hereto will  redeliver all documents and other  materials
of the  other  relating  to the  transactions  contemplated  hereby to the Party
furnishing the same.
        (b) No Party hereto shall have any  liability or further  obligation  to
the other Party, except as set forth in paragraph (a), immediately above.

SECTION 8.  INDEMNIFICATION AND REIMBURSEMENT.

8.1  INDEMNIFICATION  BY  SELLER.  In order to induce  Buyer to enter  into this
Agreement  and  to  consummate  the  transactions  contemplated  hereby,  Seller
covenants and agrees to and shall indemnify  Buyer and its directors,  officers,
employees and affiliates and shall defend and hold the same harmless against and
with respect to:
        (a) Any loss,  damage,  cost or expense resulting from or arising out of
any  misrepresentation or breach of warranty on the part of Seller in respect of
any representation or warranty of Seller set forth herein;
        (b) Any loss,  damage,  cost or expense resulting from or arising out of
any breach by Seller of this Agreement or any of the covenants or agreements set
forth herein;
        (c) Any loss,  damage,  cost or expense resulting from or arising out of
any and all debts,  liabilities and obligation of the Business not  specifically
assumed by Buyer pursuant to Section 1.5 of this Agreement  (including by way of
example  and not in  limitation  such as arise from  products  shipped by Seller
prior to Closing);
        (d) Any loss,  damage,  cost,  penalty  or  expense  resulting  from and
arising  out of any  proceeding  or action  instituted  by any  governmental  or
private entity which alleges that the transaction contemplated by this Agreement
is void or unlawful as a result of any federal or state antitrust law, policy or
regulation; and
        (e) All  demands,  assessments,  judgments,  costs,  and legal and other
expenses  (including  reasonable  attorney's  fees and costs) arising from or in
respect  of  any  action,  suit,  proceeding  or  claim  incident  to any of the
foregoing subparagraphs of this Section 8.1; provided, however, that entitlement
to  indemnification  hereunder with respect to a breach of any representation or
warranty by Seller  hereunder  (but not of any of its  covenants,  agreements or
other obligations hereunder) shall be conditioned upon claims in respect thereof
being  submitted,  if at all,  by Buyer to Seller  within six (6) years from and
after the Closing Date.

8.2  INDEMNIFICATION  BY  BUYER.  In order to induce  Seller to enter  into this
Agreement  and  to  consummate  the  transactions   contemplated  hereby,  Buyer
covenants and agrees to and shall indemnify Seller and its Directors,  officers,
employees and affiliate and shall defend and hold same harmless against and with
respect to:



                                      E-14



        (a) Any loss,  damage,  cost or expense resulting from or arising out of
any  misrepresentation  or breach of warranty on the part of Buyer in respect of
any representation or warranty of Buyer set forth herein;
        (b) Any loss,  damage,  cost or expense resulting from or arising out of
any breach by Buyer of this  Agreement or of any of the  covenants or agreements
set forth herein;
        (c) Any loss,  damage,  cost or expense resulting from or arising out of
any and all  liabilities  and  obligations  of the  Business  assumed  by  Buyer
pursuant to Section 1.5 of this Agreement;
        (d) All  demands,  assessments,  judgments,  costs  and  legal and other
expenses  (including  reasonable  attorney's  fees and costs) arising from or in
respect  of  any  action,  suit,  processing  or  claim  incident  to any of the
foregoing subparagraphs of this Section 8.2; provided, however, that entitlement
to  indemnification  hereunder with respect to a breach of any representation or
warranty by Buyer  hereunder  (but not of any of its  covenants,  agreements  or
other obligations hereunder) shall be conditioned upon claims in respect thereof
being  submitted,  if at all,  by Seller to Buyer  within six (6) years from and
after the Closing Date.

8.3  NOTICE: DEFENSE OF CLAIMS.  Buyer and Seller shall each give prompt written
notice to the other of each claim for indemnification hereunder,  specifying the
amount and nature of the claim,  and of any matter  which in the  opinion of the
Claiming  Party  is  likely  to  give  rise  to an  indemnification  claim.  The
Indemnifying  Party  shall  promptly  settle  the claim or  undertake  to defend
against the same at its sole expense and cost;  provided  that the Party seeking
indemnification shall be entitled to participate in any such defense at its cost
and expense.

8.4  LIMITATIONS  ON  INDEMNIFICATION.  (a) No Party shall have any liability in
respect of indemnification under Section 8 until the total dollar amount arising
thereunder  exceeds  Thirty-Two  Thousand Dollars  ($32,000.00)  (the "Threshold
Amount") and the notice  required by Section 8.3 is given as required by Section
8.1 or Section  8.2,  as the case may be.  Notwithstanding  the  foregoing,  the
Threshold  Amount shall not apply to any Claim arising from  Seller's  breach of
its  obligations  under  Section  9.1 c),  below.  (b) In the  event  a  Party's
liabilities  under Section  8.4(a)  exceeds the Threshold  Amount,  then in such
event the Party  obligated for such  indemnification  shall fully  indemnify and
reimburse the other party for all amounts  expended  under either Section 8.1 or
8.2, as the case may be, including such Party's Threshold Amount.


                                      E-15


        (c) A Party's  liability for  indemnification  under Section 8 shall not
exceed the  aggregate  amount of Three  Million  Two  Hundred  Thousand  Dollars
($3,200,000.00)  ("Indemnification  Limit").  Buyer  shall  have the  option  of
offsetting all or a portion of any  indemnification  claim against  payments due
under  the   Installment   Note,   Commission   Agreement,   or  any  claim  for
indemnification  filed by Seller. Seller shall have the option of offsetting all
or a portion of any indemnification  claim against any claim for indemnification
made by Buyer.
        (d) This Section 8.4 will not apply to any intentional breach by a Party
of any covenant or obligation or any knowing and intentional misrepresentation.
        (e) Wherever a "materiality"  qualification  exists,  such qualification
shall not be taken into  account in  determining  the  magnitude  of the damages
occasioned by a breach when  calculating  whether the Threshold  Amount has been
surpassed.

SECTION 9.  OTHER AGREEMENT OF BUYER AND SELLER.

9.1 COVENANTS OF SELLER.
a) Seller will pay, and will be solely  responsible for all debts,  liabilities,
obligations  relating to or arising from the Excluded  Liabilities  and Seller's
operation  of the  Business  prior to close of  business  on the  Closing  Date,
including  without  limitation,  product liability or other claims or claims for
defective products manufactured,  produced and sold by Seller in connection with
the Business or in connection with the Inventory and other Acquired Assets,  and
environmental  matters  (including fines,  penalties,  remediation costs and all
other  matters)  and Seller will pay all such debts,  liabilities  and claims or
otherwise fulfill such obligations as and when they become due or payable.

(b)  Between  the date  hereof and the  Closing,  Seller  will  comply  with the
following covenants:
                (i) Seller  will  maintain  in full force and effect its present
        insurance  policies  with respect to the Assets,  and will not knowingly
        take any action  which would  enable the  insurers  thereunder  to avoid
        liabilities  for claims arising out of occurrences  prior to the date of
        Closing.
                (ii)  Seller  will  duly  observe  and  conform  to  the  lawful
        requirements  of any  governmental  authorities  relating  to any of the
        Acquired  Assets and the covenants,  terms and conditions  upon or under
        which any of the Acquired Assets are held.
                (iii)  Seller  shall use its best  efforts to obtain any and all
        approvals and consents,  governmental or otherwise,  which are necessary
        for the consummation of the transactions  contemplated by this Agreement
        in accordance with its terms.


                                      E-16


                (iv)  Seller  will  not  communicate   with  its  customers  and
        suppliers with respect to the transaction contemplated by this Agreement
        other  than  in  cooperation  with  Buyer.  To  the  extent   reasonably
        requested,  Seller shall use its best efforts to cause its  employees to
        cooperate  with  Buyer in  communicating  with  Seller's  customers  and
        suppliers,  and shall  assist Buyer in its efforts to become a qualified
        supplier to customers of Seller.
                (v) Between the date of this  Agreement and the Closing,  Seller
        will  promptly  notify Buyer in writing if Seller  becomes  aware of any
        fact or condition that causes or constitutes a breach of any of Seller's
        representations  and warranties as of the date of this Agreement,  or if
        Seller becomes aware of the  occurrence  after the date of the Agreement
        of any fact or condition that would (except as expressly contemplated by
        this Agreement) cause or constitute a breach of any such  representation
        or warranty had such representation or warranty been made as of the time
        of occurrence or discovery of such fact or condition.
                (vi) Seller  shall not enter into any  contract,  commitment  or
        transaction  binding on or affecting the Business or the Acquired Assets
        that is not in the usual and  ordinary  course of business or that would
        obligate  Buyer for a  duration  of more than six months  without  first
        obtaining Buyer's prior written authorization.

c) Within thirty days of receiving an invoice from Buyer, Seller shall reimburse
Buyer's cost of fulfilling Seller's or Buyer's warranty obligations arising as a
result of:
                i) sales by Seller pursuant to the Business prior to Closing; or
                ii) sales of Inventory by Buyer  pursuant to the Business  after
        the Closing. Such invoices shall itemize the customer, product involved,
        invoice  date and  number  and also  reasonably  document  the amount of
        Buyer's  "Burdened  Costs"  associated with the warranty work or Buyer's
        refund or replacement cost, if in Buyer's reasonable judgment it is less
        costly to replace or refund than to repair the product  under  warranty.
        For  purposes  of this  Agreement,  "burdened  costs"  shall mean labor,
        materials,  plus an  allocation  of  overhead.  Seller may  satisfy  its
        obligations  under any such invoice by shipping  surplus  inventory of a
        kind  and  quantify  which  has  been  previously  approved  by Buyer as
        acceptable.  Seller  may claim a credit  against  such  invoices  in the
        amount of Seller's cost in the surplus inventory at the time of delivery
        of same to Buyer FOB Salt Lake City.  In the event  Seller  fails to pay
        Buyer as provided  above,  Buyer shall have the option of offsetting any
        claim for such  warranty  work from any amounts  owed  Seller  under the
        Installment Note or pursuant to the Commission Agreement.



                                      E-17


d) Buyer  will have a  non-exclusive  license  to use the trade  name  "Gentner"
and/or  "Gentner  Communications  Corporation"  as  same  appear  on  any of the
Acquired  Assets until such assets are consumed by Buyer in the ordinary  course
of business or twelve months from the Closing Date,  whichever occurs first. Any
other use shall be  prohibited  unless Buyer  receives  Seller's  prior  written
authorization. As a condition of use, Buyer agrees to use all reasonable efforts
to  assure  that  the  recipient  of such  assets  are  aware of the sale of the
Business by Seller to Buyer.

e) Seller  will  complete  delivery  of the  Acquired  Assets no later  than the
timetable established  immediately below.  ("Delivery" shall mean either placing
the  information  on the  Internet to Buyer's  attention or placing the tangible
goods in the care of a  commercial  carrier as  designated  in advance by Buyer.
Delivery of the Acquired Assets are summarized  below according to the paragraph
designation utilized in Section 1.1 of this Agreement.)
        "a)" Tooling,  dies,  etc., shall be delivered by May 5, 2002 except for
one set of screens which are required to manufacture the surface mount units for
International Radio and Electronics  Corporation f/k/a Crown International which
may be  retained  by  Seller  as long as Buyer  wishes  to  retain  Seller  as a
contractor for the manufacture of such units.
        "b)" Inventory  shall be delivered  pursuant to 2 delivery  commitments.
The First  Commitment  appears at Schedule 1.1 b) of this  Agreement  and covers
delivery's  which  will  occur  during  the 30 days  immediately  following  the
Closing. The Second Commitment will be as mutually agreed to by Buyer and Seller
during the 15 days immediately  following  Closing and will result in completion
of delivery of all Inventory within 60 days following Closing.
        "c)" Sales  orders,  etc.  shall be  delivered  within 5 days  following
Closing.
        "d)"  Trademarks,  etc. will be delivered with the execution of the Bill
of Sale at Closing.
        "e)" Seller will apply  commercially  reasonable  efforts to deliver the
Acquired  Assets no later  than the  timetable  established  immediately  below.
("Delivery" shall mean either placing the information on the Internet to Buyer's
attention or placing the tangible  goods in the care of a commercial  carrier as
designated in advance by Buyer.)
                (i)  Inventory  will be  delivered  pursuant to the  commitments
        itemized at Schedule 1.1b) of this Agreement;
                (ii)  Technical  support  equipment  will be delivered by May 5,
        2001;
                (iii)  Tangible   Personal   Property   required  by  Seller  to
        manufacture  for Buyer may be retained by Seller as long as Buyer wishes
        to retain Seller as a contractor;
                (iv) Sales orders will be delivered at Closing;
                (v) All other Acquired Assets,  including without limitation the
        Customer  Database,  software,  and  duplicated  manufacturing  Tangible
        Personal Property will be delivered by April 20, 2001.


                                      E-18


        "f)" The only Sales  Distribution  Agreement  which will be delivered is
the OEM Proposal dated July 12, 1999 with  International  Radio and  Electronics
Corporation f/k/a Crown  International whose assignment will be effective on the
date of Closing.
        "g)" Other intangible assets will be delivered with the execution of the
Bill of Sale at Closing with the  exception of the Customer Data Base which will
be delivered by April 20, 2001.

9.2  COVENANTS  OF BUYER
        (a) Buyer will pay, and subject to the limitations of Section 1.5 above,
will be solely responsible for all debts,  liabilities and obligations  relating
to or arising after the date of this  Agreement  which arise from Buyer's use of
the Acquired Assets or operation of the Business, including product liability or
other claims or claims for defective  products  manufactured  and sold by Buyer,
and will fulfill such obligations as and when they become due and payable.
        (b) Between the date hereof and the Closing,  Buyer will comply with the
following covenants:
                (i) Buyer will,  in good faith,  use its best efforts to satisfy
        all  the  conditions  to  Buyer's  obligations   hereunder  required  or
        necessary for the consummation of the transactions  contemplated by this
        Agreement; and
                (ii) Any  communication by Buyer (its agents,  employees and its
        affiliated or related  entities)  with Seller's  customers and suppliers
        with respect to the transaction  contemplated by this Agreement shall be
        for the sole purpose of having such customers and suppliers to establish
        a relationship with Buyer after the Closing with respect to the Business
        and Buyer hereby undertakes that it will not use such  communications as
        an  opportunity  to encourage  such suppliers and customers to terminate
        their relations with Seller if the Closing does not take place.



                                      E-19



SECTION 10.  MISCELLANEOUS  PROVISIONS.

10.1 NOTICES. All notices,  requests, demands and other communications hereunder
shall be  deemed to have been duly  given if  delivered  or mailed by  certified
mail:

                       TO BUYER:            Peter Burk, Pres.
                       --------             Burk Technology, Inc.
                                            7 Beaver Brook Road
                                            Littleton, MA  01460

                       With a copy to:      Noel R. Bartsch, Esq.
                                            PO Box 7581
                                            Fitchburg, MA  01420

                       TO SELLER:           Frances M. Flood, Pres.
                       ---------            Gentner Communications Corporation
                                            1825 Research Way
                                            Salt Lake City, UT  8419

                       With a copy to:      James A. Valeo, General Counsel
                                            Gentner Communications Corporation
                                            1825 Research Way
                                            Salt Lake City, UT  8419

or to such other  address of which any party may by  certified  mail  notify the
other.



                                      E-20


10.2  GOVERNING  LAW.  This  Agreement  shall be  governed by and  construed  in
accordance  with the laws of the  Commonwealth  of  Massachusetts  including its
conflict of laws provisions.

10.3 ENTIRE  AGREEMENT.  This  Agreement,  including  the Schedules and Exhibits
referred   to  herein,   is   complete   and  all   promises,   representations,
understandings,  warranties  and  agreements  with respect to the subject matter
hereof,  and all inducement to the making of this  Agreement  relied upon by any
Party hereto,  have been expressed herein. This Agreement may not be modified or
amended except in writing signed by the Parties hereto.

10.4  EXPENSES.  Each of the  Parties  hereto  will  bear  its own  legal  fees,
consulting or professional  fees and other expenses  incurred in connection with
this Agreement or any transaction contemplated by this Agreement.

10.5  ASSIGNMENT.  This  Agreement  and all of the  provisions  hereof  shall be
binding upon and inure to the benefit to the Parties  hereto,  their  successors
and assigns.  Subject to the other provisions of this Section, Seller may freely
assign this Agreement, and its rights and obligations hereunder, without seeking
the consent of Buyer. Buyer may freely assign this Agreement, and its rights and
obligations  hereunder,  to an  affiliate  of Buyer or (with the  prior  written
consent of Seller,  which consent may not be  unreasonably  withheld) to a third
party.  Except as set forth in the next  sentence,  any assignment of this Asset
Purchase  Agreement  by either  Party  must also  include an  assignment  of the
Commission Agreement, Security Agreement,  Non-Compete Agreement and Installment
Note,  executed of even date  herewith by the  Parties.  Any  assignment  of the
Commission Agreement,  Security Agreement,  and Installment Note by Seller to an
affiliate must be conditioned upon Seller remaining jointly and severally liable
for the  performance  of all the  obligations  under such documents and must not
void Buyer's right to offset against amounts due under the Installment  Note and
Commission  Agreement  as  allowed  in  Section  9.1  c) of the  Asset  Purchase
Agreement.  Notwithstanding any of the provisions of this Section, Peter C. Burk
may transfer up to 49% of his stock in Buyer at anytime without having to obtain
Seller's  approval  or  qualifying  under  any of the other  provisions  of this
Agreement.


                                      E-21


10.6  NON-DISCLOSURE.  The  Parties  each  covenant  and agree  that,  except as
provided  for  herein  below,  each will not for a period of five years from and
after the date hereof make, issue or release any public announcement,  statement
or acknowledgment of the existence of, or reveal publicly the terms,  conditions
and status of, the transactions  provided for herein,  without the prior written
consent  of the other  Party as to the  content  and time of  release of and the
media in which such statement or announcement is to be made; provided,  however,
that in the case of announcements,  statements,  acknowledgments  or revelations
which  either  Party is required by law to make,  issue or release,  the making,
issuing or  releasing of any such  announcement,  statement,  acknowledgment  or
revelation  by the Party so  required  to do so by law shall  not  constitute  a
breach  of  this  Agreement  if such  Party  shall  have  given,  to the  extent
reasonably  possible,  not less than 2 business  days prior  notice to the other
Party, and shall have attempted,  to the extent  reasonably  possible,  to clear
such announcement, statement, acknowledgment or revelation with the other Party.
Each Party hereto agrees that it will not unreasonably withhold any such consent
or clearance.  The  foregoing  shall not,  however,  preclude the Parties on and
after  the  date  hereof  from  notifying  their  respective  employees  of  the
transactions  provided  for herein or preclude  Buyer from and after the Closing
Date from  notifying  customers  and suppliers of the Business and others having
business  relationships  with the Business as to consummation of the transaction
provided for herein (but not the  financial  terms and  conditions  hereof).  In
addition,  Buyer  acknowledges  that  Seller  will  file a  Form  8-K  with  the
Securities and Exchange Commission  regarding the transactions  described herein
following the Closing.

10.7 COSTS. Each Party covenants and agrees that it shall be responsible for and
shall bear its respective  costs and expenses in connection with, or arising out
of, the negotiation,  preparation and execution of the Agreement and performance
of the transactions  contemplated  hereby;  except as such may be covered by the
indemnity provisions of this Agreement.

10.8 INTENTIONALLY OMITTED.

10.9  WAIVER,  REMEDIES.  No  waiver  of any  breach  of any  provision  of this
Agreement  shall be held to be a waiver of any other or subsequent  breach,  and
the failure of a Party to enforce at any time any provision  hereof shall not be
deemed a  waiver  of any  right  of such  Party  to  subsequently  enforce  such
provision or any other provision hereof. All remedies afforded in this Agreement


                                      E-22


shall be taken and construed as cumulative,  that is, in addition to every other
remedy provided herein or by law.

10.10  SEVERABILITY.  In the event  that any  provision  or any  portion  of any
provision of this  Agreement  shall be held  invalid,  illegal or  unenforceable
under  applicable  law, the remainder of this  Agreement  shall remain valid and
enforceable,   unless   such   invalidity,    illegality   or   unenforceability
substantially diminishes the rights and obligations, taken as a whole, or either
Party hereunder.

10.11 SURVIVAL OF  REPRESENTATIONS,  WARRANTIES,  COVENANTS AND AGREEMENTS.  All
representations,  warranties,  covenants and  agreements  of the Parties  hereto
contained in this Agreement and any Schedule or Exhibit hereto shall survive the
execution and delivery hereof and thereof and  consummation of the  transactions
provided for herein  notwithstanding  any investigation  heretofore or hereafter
made by or on behalf of the respective  Parties  hereto.  All such  undertakings
shall  expire two years  after the Closing  except  for:  i) Seller's  covenants
appearing at Paragraphs a) and c) of Section 9.1 of this  Agreement  which shall
expire six years after the Closing;  ii) the other  paragraphs  of Section 10 of
this  Agreement  which shall extend  indefinitely  unless  specifically  limited
therein;  and iii) the provisions of the Installment Note,  Security  Agreement,
Commission Agreement,  and Non-Compete Agreement which shall expire according to
their respective terms.

10.12 RESOLUTION OF DISPUTES. Any dispute arising out of, or in connection with,
this  Agreement,  including any question  regarding its  existence,  validity or
termination,   shall  be  settled  by  final  and  binding  alternative  dispute
resolution  ("ADR") as follows:  first,  by good faith  negotiation  between the
parties for a period of no more than ten (10) days  following  written notice by
the disputing party to the other party of such dispute;  second,  if unresolved,
by  non-binding  meditation  for a period of thirty  (30) days before a mutually
satisfactory  mediator;  and third, if still unresolved  following  mediation or
following  fifteen  (15)  days with the  parties  being  unable to agree  upon a
mediator,  by binding arbitration in the location of the non-initiating  party's
executive  office,  before a single  arbitrator  under the rules of the American
Arbitration  Association.  The  Parties  agree to utilize the courts only to: a)
enforce the final decision  resulting from  application of this Section;  and b)
obtain such injunctive  relief as is necessary to avoid irreparable harm pending
such  final  decision  under  this  Section.  In the  event  of  issuance  of an
injunction,  the Parties  agree to promptly  cooperate as necessary to remove or
modify the  injunction to be consistent  with any interim or final ADR decision.


                                      E-23


Each party  shall bear all of its own costs and  expenses  and  one-half  of the
costs and expenses of any mediator or arbitrator.

10.13 PRODUCTION SUPPORT.
a) In  order to  complete  the  transfer  of the  Business.  Seller  agrees  and
covenants to provide Buyer without  charge the following  assistance  during the
time periods indicated:
        Training--During  the week of April  30,  2001.  Seller  agrees to train
Buyer's Customer Service  Representative at Seller's  facilities.  Within thirty
days  following  Closing  at a mutually  agreeable  time,  Seller  will make its
personnel  available to train up to five  addition  employees of Buyer for up to
three business days each at Seller's facilities; and
        Telephone  Assistance--During the 90 days following Closing, Seller will
identify technical, marketing, and manufacturing employees who will be available
to Buyer's personnel for telephone consultation during normal business hours.
        Make and Hold Commitments--Seller will do everything reasonably possible
to allow Buyer to avail itself of the raw  materials  and  components  presently
allocated to Seller at its  supplier's  warehouses  in order to  facilitate  the
uninterrupted transfer of the Business from Seller to Buyer.
b) Seller also covenants and agrees to indefinitely  support Buyer's  reasonable
requests for assistance i) in meeting Buyer's warranty obligations  described in
ii) of paragraph c) of Section 9.1 of this  Agreement,  and ii) generally in the
operation and future  development of the Business.  Seller will receive  payment
for such  additional  support  at charges  which  represent  Seller's  "Burdened
Costs".
c) All of the  foregoing  shall  be in  addition  to  any  assistance  which  is
reasonably requested by Buyer to meet Seller's warranty obligations described in
i) of  paragraph c) of Section 9.1 of this  Agreement  which Seller will provide
without charge to Buyer.

10.14  SALES SUPPORT.  After the Closing,  Seller  agrees to promptly  refer all
customer  inquiries with regard to the Business to the  individuals,  addresses,
and phone numbers  identified to Seller by Buyer in writing.  Seller also agrees
to  cooperate to allow  Buyer's  direct phone number to be connected to Seller's
telephone control center to enable telephone  inquiries to be directly connected
to Buyer's office.  Buyer acknowledges that such direct connection must be at no
cost to Seller and not disruptive to Seller's operations.


                                      E-24


        IN WITNESS WHEREOF,  the Parties hereto,  intending to be legally bound,
have caused this  Agreement to be executed by their  authorized  representatives
(hereunto  declaring to be duly  authorized) on and as of the day and date first
above set forth.

SELLER:                                            BUYER:

Gentner Communications Corporation                 Burk Technology, Inc.
BY:/s/ Frances M. Flood                            BY:/s/Peter C. Burk
   ---------------------------------                  --------------------------
   Frances M. Flood, President & CEO                  Peter C. Burk, President



                                      E-25





                                        EXHIBITS

      EXHIBIT         A             INSTALLMENT NOTE

                      B             SECURITY AGREEMENT

                      C             COMMISSION AGREEMENT

                      D             SELLER'S NON-COMPETE AGREEMENT

                      E.            BILL OF SALE



                                      E-26



                                    EXHIBIT A

                         NON-NEGOTIABLE INSTALLMENT NOTE


$ 1,750,000.00                              Littleton, Massachusetts
                                            April  12,  2001

FOR VALUE RECEIVED,  the  undersigned,  BURK  TECHNOLOGY,  INC., a Massachusetts
corporation  with  offices  at 7 Beaver  Brook  Road,  Littleton,  MA 01460 (the
"Debtor"), hereby promises to pay to

GENTNER COMMUNICATIONS CORPORATION

a Utah  corporation  with offices at 1825  Research Way, Salt Lake City UT 84119
(the  "Creditor"),  OR ORDER,  at Creditor's  office,  as  identified  above (or
subsequently  changed by  Creditor  providing  written  notice to Debtor of such
change of address), the principal sum of

                ONE MILLION SEVEN HUNDRED FIFTY THOUSAND DOLLARS
                                ($1,750,000.00)

with interest on the unpaid  principal  until paid at the rate and in the manner
hereinafter provided in lawful money of the United States of America.

The per annum rate of interest to be charged  shall be fixed at the rate of nine
percent  (9.0%) per annum.  Debtor will commence  paying  interest and principal
totaling   Ninety-Three  Thousand  Three  Hundred  Sixty-Six  and  Thirteen  One
Hundredths  Dollars  ($93,366.13)  on a quarterly basis beginning with the first
day of the first full  calendar  quarter which occurs at least 180 days from the
date of this note, as more specifically enumerated on the attached Schedule A.

Each payment shall be applied:  first to any late fees;  second to interest then
due on the unpaid balance of principal; and only then to reduction of principal.

Schedule A attached to this Note provides for  twenty-six  consecutive  calendar
quarterly  payments.  Creditor  agrees that the Borrower may declare a quarterly
payment deferral  applicable to the next quarter if the aggregate "Net Sales" of
the  "Combined  Business"  (as  to the  two  quoted  terms  are  defined  in the
Commission  Agreement of today's  date) fails to meet or exceed  $1,100,000  per
calendar  quarter  or such pro rated  portion  of this  amount  for any  partial
calendar quarter. Any payments so deferred shall be paid on a calendar quarterly
basis commencing after completion of the projected  sixteen quarters  identified
at Schedule A with interest  calculated on the deferred  amount at 9% per annum.
(For  example,  if Debtor  deferred  four  quarterly  payments  during the first
sixteen quarters,  these payments would be due in quarters  seventeen to twenty,
respectively  on a FIFO basis.) In any event,  all  indebtedness,  including all


                                      E-27


unpaid or deferred  principal,  interest,  and unpaid fees and expenses,  if not
sooner  paid,  shall be due and  payable  seven (7) years  from the date of this
Note.

The Debtor  shall have the right to prepay this Note in part or in full  without
penalty. Any partial prepayment shall relieve Debtor of the obligation to make a
regularly  scheduled payment as specified above in the amount of such prepayment
which has not been previously credited against a scheduled payment.

This Note  shall  become  due and  payable,  including  the  entire  balance  of
principal and interest then accrued and unpaid,  prior to maturity at the option
(exercisable  regardless of any prior  forbearance or indulgences) of the holder
hereof upon any one or more of the following  events,  the  occurrence of any of
which shall be a default:

        a)  failure to make any  payment  due under this Note which is not cured
within  fifteen (15) days from the date of the mailing of notice of such default
by Creditor to Debtor; or

        b) default in the  performance  or observance of any of the  agreements,
covenants  or  conditions  of this Note,  Commission  Agreement  or the Security
Agreement,  all of today's date, not cured within thirty (30) days from the date
of the mailing of notice of such default by Creditor to the Debtor;

        c) institution of bankruptcy or insolvency proceedings by the Debtor, or
against  the Debtor by a third  party  when such  action is not  removed  within
fifteen (15) days of institution; or

        d) lapse or termination of Debtor's interest in any collateral  securing
this Note except such  collateral  as is: a) replaced by  collateral of equal or
greater  value;  or b) otherwise  sold or diminished  in the ordinary  course of
business.

The  Debtor  also  agrees to pay a late  charge for  payments  of  interest  and
principal  made fifteen (15) days after their due date assessed at three percent
(3%) of the overdue  amount.  Such late charge payments are made for the purpose
of  compensating  the  Creditor  for its  administrative  costs and  expenses in
handling late payments and losses in connection therewith. This provision is not
intended to provide a grace period for any payment otherwise due and payable and
shall  not  constitute  a waiver  by the  Creditor  to  insist  upon the  strict
performance of any of the  conditions of this Note or the Security  Agreement or
to declare  any event of default  for any  payment  not made when it was due and
payable.

In case this Note shall not be paid in full  whenever it shall  become due,  the
Debtor agrees to pay all costs and expenses of collection, including court costs
and reasonable attorneys' fees.

The  indebtedness  evidenced  by this Note is  subject  to the  provisions  of a
Security Agreement in the assets described in such Agreement.


                                      E-28


This Note and all of the  provisions  hereof  shall be binding upon and inure to
the benefit to the Parties hereto, their successors and assigns.  Subject to the
other provisions of this Paragraph, Creditor may freely assign this Note and its
rights and obligations hereunder,  without seeking the consent of Debtor. Debtor
may freely assign this Note,  and its rights and  obligations  hereunder,  to an
affiliate  of Debtor  or (with the prior  written  consent  of  Creditor,  which
consent may not be unreasonably  withheld) to a third party. Except as set forth
in the next  sentence,  any  assignment  of this Note by either  Party must also
include  an  assignment  of  the  Commission   Agreement,   Security  Agreement,
Non-Compete  Agreement  and  Asset  Purchase  Agreement,  executed  of even date
herewith by the Parties.  Any assignment of the Commission  Agreement,  Security
Agreement,  and this Note by Creditor to an affiliate must be  conditioned  upon
Creditor  remaining  jointly and severally liable for the performance of all the
obligations  under such  documents  and must not void  Debtor's  right to offset
against  amounts  due under  this Note and  Commission  Agreement  as allowed in
Section  9.1 c) of the  Asset  Purchase  Agreement.  Notwithstanding  any of the
provisions of this Section, Peter C. Burk may transfer up to 49% of his stock in
Debtor at anytime  without  having to obtain  Creditor's  approval or qualifying
under any of the other provisions of this Note.


IN WITNESS  WHEREOF,  the Debtor has executed this Note as an  instrument  under
seal as of the day and year first above written.

Signed in the presence of:
                                                   Burk Technology, Inc.

_______________________                            /s/Peter C. Burk
                                                   ---------------------
                                                   Peter C. Burk, President
                                                   Duly Authorized




                                      E-29




                  Schedule A to Non-Negotiable Promissory Note


Quarterly Payment Schedule

                            [INTENTIONALLY OMMITTED]



                                      E-30



                                    EXHIBIT B

                         SUBORDINATED SECURITY AGREEMENT

        This  Security  Agreement  ("Agreement")  dated as of April 12, 2001, is
made and entered into by and between  Burk  Technology,  Inc.,  a  Massachusetts
corporation  ("Grantor"),   and  Gentner  Communications   Corporation,  a  Utah
corporation ("Secured Party").

        WHEREAS,  Grantor is delivering  to Secured  Party a (i)  Non-Negotiable
Installment Promissory Note in the principal amount of One Million Seven Hundred
Fifty Thousand and 00/100  Dollars  ($1,750,000)  (the "Note"),  together with a
Commission  Agreement  providing for the payment of $700,000 in accordance  with
the  terms  thereof  (the  "Commission  Agreement"),  both  dated as of the date
hereof;

        WHEREAS, the Grantor and Secured Party an Asset Purchase Agreement dated
April  12,  2001  (the  "Purchase  Agreement"),  pursuant  to which  Grantor  is
purchasing  certain  assets from Secured Party using the Note and the Commission
Agreement; and

        WHEREAS,  Grantor  has  agreed to grant  the  Secured  Party a  security
interest in the  Collateral  (as herein  defined) as security for payment of the
amounts  due by  Grantor  to  Secured  Party  under the Note and the  Commission
Agreement (the "Obligations");

        NOW, THEREFORE, in consideration of the foregoing, and of other good and
valuable  consideration,  the  receipt  and  sufficiency  of  which  are  hereby
acknowledged, the parties hereby agree as follows:

1.      GRANT OF SECURITY INTEREST; DEFINED TERMS

        (a) Grant of Security Interest.  As collateral  security  ("Collateral")
for the prompt and complete payment and performance when due of the Obligations,
Grantor hereby sells, conveys,  mortgages,  hypothecates,  pledges,  assigns and
transfers to the Secured Party, a continuing lien upon and security interest in,
all of Grantor's  right,  title and interest,  now owned or hereafter  acquired,
regardless  of where  located  and  without  any  further act on the part of the
Grantor or Secured Party, in the Collateral, subject to the Senior Indebtedness.

        (b)  Definitions.  For purposes of this  Agreement,  the following terms
shall have the meanings set forth below unless the context  otherwise  requires.
Certain other terms will be defined below.  Other terms which are defined in the
Massachusetts  Uniform Commercial Code,  Massachusetts General Laws, Chapter 106
(the "Uniform  Code") shall,  unless  otherwise  defined  herein,  or unless the
context hereof  requires  otherwise,  have the meanings set forth in the Uniform
Code.

                (i)  Collateral.  The term  "Collateral"  shall  mean all of the
        following  types and items of property  whether now owned or existing or


                                      E-31


        hereafter acquired or arising: all "Inventory,"  "Accounts," "Investment
        Property" and all "Equipment" (all as defined below) of Grantor;  all of
        Grantor's  fixtures,  goods,  materials,  and  other  tangible  personal
        property; all of Grantor's,  trademarks,  trademark applications,  trade
        names, service marks,  copyrights,  licenses,  goodwill,  knowhow, trade
        secrets,  intellectual  property of all kinds, customer lists, choses in
        action,  contracts and contract rights,  instruments,  refund claims and
        other intangible personal property (including General Intangibles);  all
        documents  of title  evidencing  or issued  with  respect  to any of the
        foregoing   (including  without  limitation  all  bills  of  lading  and
        warehouse  receipts);  and all  other  items  of  personal  property  of
        whatever  description,  whether  now  owned  or  hereafter  acquired  or
        arising.  It shall also include all products and proceeds of  Collateral
        (including,  specifically,  proceeds of insurance  policies insuring any
        Collateral  against loss by theft,  casualty or  otherwise).  Collateral
        shall also include all substitutions  for,  accessions and modifications
        to and other  additions and  replacements  for any of the Collateral and
        all other rights or interests  arising out of or in connection  with the
        Collateral or any of it.

                (ii)  Equipment.  The term  "Equipment"  shall have the  meaning
        provided  therefor in the  Uniform  Code and shall  also,  for  purposes
        hereof, specifically include (without limitation) any and all machinery,
        tools, equipment,  computers, vehicles, furniture, and furnishings, etc.
        used in or in connection with the business of Grantor, whether now owned
        or hereafter owned, acquired or arising or created.

                (iii)  Inventory.  The term  "Inventory"  shall have the meaning
        provided  therefor in the Uniform  Code,  including  all of the same now
        owned or  hereafter  acquired  by  Grantor  wherever  located,  and also
        including all of Grantor's  rights as sellers of goods under the Uniform
        Code and all inventory  which may be returned or  repossessed,  and also
        all  proceeds  of the same  including  insurance  proceeds  realized  in
        connection with the Inventory, its loss or damage, and including without
        limitation,  all raw materials, stock in trade, finished goods and goods
        in process.

                (iv)  Accounts.  The term  "Accounts"  shall mean any and all of
        Grantor's  Accounts  (as  defined in the  Uniform  Code) and any and all
        rights of any kind of Grantor to payment  from a third  party  including
        without limitation all instruments,  executory contract rights, contract
        rights,  chattel paper and any general intangibles,  whether now held or
        existing or hereafter  acquired or arising.  Accounts shall also include
        all proceeds of the same and shall also mean all ledger  sheets,  files,
        records, and documents relating to the same, including,  but not limited
        to, invoices,  purchase orders, contracts, etc. For purposes hereof, any
        person,  party or entity obligated to the Grantor on any of the Accounts
        shall be referred to herein as an "account  debtor" or  collectively  as
        "account debtors."

                (v) Senior  Indebtedness.  The term "Senior  Indebtedness" means
        all  existing  indebtedness  (and  refinancings  thereof  in no  greater
        aggregate  principal  amount then is  permitted  by this  Agreement)  to
        Grantor's  principal lender.  Any loans from Grantor's  principal lender
        whose   primary   collateral  is  real  estate  will  be  excluded  when
        calculating the aggregate amount of Senior Indebtedness.


                                      E-32



2.      SECURITY FOR OBLIGATIONS

        This Agreement secures,  and the Collateral is collateral  security for,
the prompt  payment or  performance  in full when due  (including the payment of
amounts that would become due but for the operation of the automatic  stay under
Section 362(a) of the Bankruptcy Code, 11 U.S.C.ss.  362(a)), of all Obligations
and  liabilities  of every nature of Grantor now or hereafter  existing under or
arising  out of or in  connection  with the Note  and the  Commission  Agreement
whether for principal, interest (including without limitation interest that, but
for the filing of a petition in bankruptcy with respect to Grantor, would accrue
on  such  obligations),   fees,  expenses,  indemnities  or  otherwise,  whether
voluntary or involuntary, direct or indirect, absolute or contingent, liquidated
or  unliquidated,  whether or not jointly owed with  others,  and whether or not
from time to time  decreased or  extinguished  and later  increased,  created or
incurred,  and all or any portion of such  obligations or  liabilities  that are
paid,  to the  extent all or any part of such  payment  is avoided or  recovered
directly or indirectly from Secured Party as a preference,  fraudulent  transfer
or otherwise,  and all  obligations  of every nature of Grantor to Secured Party
now or hereafter existing.

3.      GRANTOR REMAINS LIABLE

        Anything contained herein to the contrary  notwithstanding,  (i) Grantor
shall  remain  liable  under  any  contracts  and  agreements  included  in  the
Collateral,  to the extent set forth  therein,  to perform all of its duties and
obligations  thereunder  to the same  extent as if this  Agreement  had not been
executed,  (ii) the  exercise  by Secured  Party of any of its rights  hereunder
shall  not  release  Grantor  from any of its  duties or  obligations  under the
contracts and  agreements  included in the  Collateral,  and (iii) Secured Party
shall not have any  obligation or liability  under any contracts and  agreements
included in the Collateral by reason of this Agreement,  nor shall Secured Party
be obligated to perform any of the  obligations or duties of Grantor  thereunder
or to take any  action to  collect or  enforce  any claim for  payment  assigned
hereunder.

4.      REPRESENTATIONS AND WARRANTIES

        Grantor represents and warrants that:

        (a) Assurance of Title. Grantor is and, except as expressly permitted or
provided for herein,  will remain, the owner of all of the Collateral,  free and
clear of all liens and  encumbrances of every kind and nature,  and subject only
to  (i)  the  Senior  Indebtedness,  and  (ii)  Secured  Party'  rights  in  the
Collateral.

        (b) Location of Collateral.  All Collateral  owned or held by Grantor on
the date hereof is located within the State of Massachusetts.

        (c) Governmental  Authorizations.  No  authorization,  approval or other
action  by,  and no notice to or filing  with,  any  governmental  authority  or
regulatory  body is required for either (i) the grant by Grantor of the security
interest  granted  hereby,  (ii) the execution,  delivery or performance of this

                                      E-33


Agreement by Grantor,  or (iii) the exercise by Secured  Party of its rights and
remedies  hereunder  except as may have been taken by or at the direction of the
Grantor  (including,   for  example,  the  filing  of  financing  statements  in
appropriate government offices covering the Collateral).

        (d) Grantor's  current  Senior  Indebtedness  (prior to the execution of
this Agreement) does not exceed Nine Hundred Ten Thousand Dollars ($910,000).

5.      COVENANTS

        Grantor  covenants  and  agrees  that  from and  after  the date of this
Agreement and for so long as the Obligations remain outstanding:

        (a) Recording and Legal Costs.  Grantor will pay all  recordation  costs
and taxes incident to filing of financing statements and continuation statements
in respect thereof.

        (b) Further  Documentation  and Actions.  At any time,  and from time to
time, upon request of Secured Party and at the sole expense of Grantor,  Grantor
will endorse, execute and deliver to Secured Party all instruments or documents,
including,  but not limited to,  financing or continuation  statements under the
Uniform Code in effect in any  jurisdiction  with  respect to the liens  created
under this  Agreement,  and do all  things  reasonably  necessary  to carry into
effect the  provisions of this  Agreement or to create,  preserve or perfect any
interest  granted  hereby or to enable or assist  Secured  Party to exercise and
enforce its rights hereunder or in connection  herewith or with the Obligations,
and to facilitate collection of Collateral.  Grantor authorizes Secured Party to
file any charge,  financing  statement or  continuation  statement in such form,
with or without  Grantor's  name  signed  thereon,  and in such places as may be
appropriate.

        (c) Name and Location. Grantor may, with prior written notice to Secured
Party,  open or close an executive office or place of business,  and will advise
Secured  Party in  writing  of any  change in  Grantor's  name prior to any such
change. In addition,  at any reasonable time, upon prior request,  Secured Party
may inspect the  Collateral at its sole cost and expense.  With the exception of
Collateral delivered to Secured Party as provided above, the Collateral shall be
maintained at the places of business of the Grantor.

        (d) Further Covenants.  Without the prior written consent of the Secured
Party,  Grantor  will not:  (i)  pledge or grant any  security  interest  in any
Collateral  to anyone  except  Secured Party or the Senior Lender nor permit any
financing statement (except Secured Party's financing statement,  or a financing
statement  in  connection  with the  Senior  Indebtedness)  to be on file in any
public  office with respect  thereto  (and except in  connection  with  existing
security  interests in favor of certain third parties);  (ii) create,  permit or
suffer any lien to attach to any of the  Collateral,  other than in favor of the
Secured Party or the Senior  Lender;  (iii) sell,  transfer,  lease or otherwise
dispose of any of the Collateral, or attempt, offer or contract to do so, except
in the ordinary course of business  (including purchase money security interests
and long term equipment  leases),  or (iv) permit its total Senior  Indebtedness
(excluding  indebtedness  to  Secured  Party)  to  exceed  One  Million  Dollars


                                      E-34


($1,000,000) (the "Indebtedness  Cap") while the Obligations remain outstanding.
Notwithstanding  the other  provisions of this  paragraph,  Grantor may obtain a
working  capital  line  of  credit  of  up  to  Five  Hundred  Thousand  Dollars
($500,000),  without obtaining the consent of Secured Party,  provided that when
the amount thereof is added to any then existing Senior Indebtedness of Grantor,
the total  Senior  Indebtedness  of the Grantor  (not  including  to the Secured
Party) does not exceed the Indebtedness Cap.

        (e)  Further  Identification  of  Collateral.  Grantor  will  furnish to
Secured Party from time to time statements and schedules further identifying and
describing  the  Collateral  and  such  other  reports  in  connection  with the
Collateral as Secured Party may reasonably request, all in reasonable detail.

        (f)  Maintenance of Collateral.  Grantor shall pay promptly when due all
property and other taxes, assessments and governmental charges or levies imposed
upon,  and all  claims  (including  claims for labor,  materials  and  supplies)
against,  the  Collateral,  except to the extent the  validity  thereof is being
contested in good faith.  Grantor shall  maintain  insurance,  at its sole cost,
with respect to the Collateral in amounts customary for property  comprising the
Collateral, or as otherwise reasonably requested by Secured Party.

6.      EVENTS OF DEFAULT

        Each of the following shall constitute an "Event of Default" hereunder:

        (a) Nonperformance. Failure of the Grantor to pay any amounts due to the
Secured Party under the Note within fifteen (15) days of the date notice thereof
is mailed by Secured  Party to  Grantor,  or the  failure of Grantor to cure any
other  default or to perform  any  obligation  hereunder,  under the  Commission
Agreement,  or the Note,  within  thirty  (30) days of the  mailing  of a notice
thereof by Secured Party to Grantor.

        (b) Termination of Interest.  Lapse or termination of Grantor's interest
in any of the Collateral other than in the ordinary course of business.

        (c) Extraordinary Events. If (i) Grantor shall file a voluntary petition
in bankruptcy  or a petition or answer  seeking a  reorganization,  arrangement,
composition, readjustment,  liquidation, dissolution or other relief of the same
or different  kind under any provision of the  bankruptcy  laws or Grantor shall
make an assignment for the benefit of creditors; or (ii) an involuntary petition
in  bankruptcy  against  Grantor or a petition or answer made by a person  other
than Grantor seeking a reorganization,  arrangement, composition,  readjustment,
liquidation,  dissolution  or  other  relief  against  Grantor  of the  same  or
different  kind  under any  provision  of the  bankruptcy  laws is filed or if a
receiver is appointed having  jurisdiction of the business property or assets of
Grantor,  and, in any of such events, if such petition shall not be dismissed or
the  receivership  vacated  within  ninety  (90)  days  from the  date  filed or
commenced.


                                      E-35


7.      SUBORDINATION AND EFFECT OF SUBORDINATION

        (a) Secured Party hereby  subordinates its interest in the Collateral to
the terms,  conditions and lien of the Senior Indebtedness.  Secured Party shall
take all actions and execute such documents and instruments as may reasonably be
requested  by the holder of the Senior  Indebtedness  (the  "Senior  Lender") in
order to further  assure  unto the  Senior  Lender the  rights,  privileges  and
agreements provided in the Senior Indebtedness.

        (b) In the event that Grantor requests Secured Party's consent to exceed
the Indebtedness Cap, such consent will not be unreasonably  withheld by Secured
Party, and shall be deemed granted seven (7) days following the request therefor
(and the supply of all  reasonable  information  requested  by Secured  Party in
connection therewith), unless such consent is denied in writing.

8.      CERTAIN RIGHTS; EFFECT OF EVENT OF DEFAULT

        (a) Obligation Due; Commitments Terminated. If an Event of Default shall
occur, then,  notwithstanding any other agreement now or hereafter existing, and
subject to the terms and conditions of this Agreement  (including the provisions
with respect to subordination  and the Senior  Indebtedness),  Secured Party may
declare all  Obligations  immediately  due and payable and exercise any remedies
provided herein.

        (b) Actions Regarding  Collateral.  Secured Party, at any time after the
occurrence  of an Event of Default,  and subject to the terms and  conditions of
this  Agreement,  may  collect,  receive,   appropriate  and  realize  upon  any
Collateral  or any part  thereof.  Upon any Event of Default,  Secured Party may
sell, re-sell,  assign, transfer, lease and deliver or otherwise deal or dispose
of or  decline to deal with all or any part of the  Collateral,  in each case in
accordance  with the Uniform Code,  at public or private sale or sales,  at such
price or prices as it may deem best,  and upon such terms and  conditions  as it
may deem  advisable,  either  for cash or  credit  or  future  delivery  without
assumption of any credit risk as Secured Party may elect. The parties agree that
ten days'  prior  notice to Grantor  of any such  action is  reasonable  for the
purposes of the Uniform Code.  Secured Party shall apply the net proceeds of any
such collection,  recovery, receipt,  appropriation,  realization or sale, after
deducting all reasonable costs and expenses of incurred therein or incidental to
the care or safekeeping of any of such Collateral or relating to such Collateral
or the  rights  of  Secured  Party  hereunder,  including,  without  limitation,
reasonable attorneys' fees and disbursements, to the payment in whole or in part
of the  Obligations,  and only after such  application  and after the payment by
Secured Party of any other amount  required by any provision of law,  including,
without limitation,  Section 9-504(l)(c) of the Uniform Code, need Secured Party
account for the surplus, if any, to Grantor.  Secured Party shall have the right
upon any such public sale or sales and, to the extent permitted by law, upon any
such private sale or sales,  to purchase the whole or any part of any Collateral
so sold. If the proceeds of any sale or other  disposition of the Collateral are
insufficient  to pay  all the  Obligations,  Grantor  shall  be  liable  for the
deficiency  and the fees of any  attorneys  employed by Secured Party to collect
such deficiency.


                                      E-36


        (c)  Additional  Remedies upon Event of Default.  If an Event of Default
shall occur and be  continuing,  Secured Party may exercise,  in addition to all
other  rights  and  remedies  granted  under  this  Agreement,  and in any other
instrument or agreement securing, evidencing or relating to the Obligations, all
rights and remedies of a secured party under the Uniform Code.

(d)  Continuing  Security  Interest.  This  Agreement  shall create a continuing
security  interest  in the  Collateral  and shall (i)  remain in full  force and
effect until the  fulfillment of all  obligations of the Grantor under the Notes
and this  Agreement,  (ii) be binding upon Grantor,  its successors and assigns,
and (iii)  inure to the  benefit  of the  parties  hereto  together  with  their
successors  and  permitted  assigns.  Upon the  payment of the  Obligations  the
security  interest  granted  hereby  shall  terminate,  and  all  rights  in the
Collateral  shall revert to Grantor.  Upon any such  termination  Secured  Party
will,  at Grantor's  expense,  execute and deliver to Grantor such  documents as
Grantor shall reasonably request to evidence such termination.

9.      GENERAL PROVISIONS

        (a)  Remedies  Cumulative.  All rights,  remedies  and powers of Secured
Party hereunder and in connection  herewith are cumulative,  and not alternative
or  exclusive,  and may be  exercised  singly  or  concurrently  and shall be in
addition to all other rights, remedies and powers of Secured Party whether under
law, equity or agreement.

        (b) Governing Law; Severability. This Agreement shall be governed by and
construed in  accordance  with the laws of the State of  Massachusetts,  without
giving effect to the conflicts of laws  provisions  thereof.  Each  provision of
this Agreement  shall be interpreted in such manner as to be effective and valid
under applicable law, but if any provision of this Agreement shall be prohibited
by or invalid under such law, such provision  shall be ineffective to the extent
of such  prohibition or invalidity,  without  invalidating the remainder of such
provision or the remaining provisions of this Agreement.

        (c)  Construction.  The captions in this  Agreement are for  convenience
only and shall not affect the construction or interpretation hereof.  References
to days herein shall mean calendar days unless otherwise specified.

        (d) Assignment. This Agreement and all of the provisions hereof shall be
binding upon and inure to the benefit to the Parties  hereto,  their  successors
and assigns.  Subject to the other provisions of this Section, Secured Party may
freely assign this Agreement, and its rights and obligations hereunder,  without
seeking the consent of Grantor.  Grantor may freely assign this  Agreement,  and
its rights and  obligations  hereunder,  to an affiliate of Grantor or (with the
prior written  consent of Secured Party,  which consent may not be  unreasonably
withheld)  to a third  party.  Except  as set  forth in the next  sentence,  any
assignment of this  Agreement by either Party must also include an assignment of
the Commission  Agreement,  Note, and Purchase Agreement,  Non-Compete Agreement
(executed by the parties and of even date herewith).  Any assignment of the this
Agreement,  the Commission Agreement,  and Note by Secured Party to an affiliate
must be conditioned  upon Secured Party remaining  jointly and severally  liable


                                      E-37


for the  performance  of all the  obligations  under such documents and must not
void Grantor's right to offset against amounts due under the Note and Commission
Agreement   as   allowed  in  Section   9.1  c)  of  the   Purchase   Agreement.
Notwithstanding  any of the  provisions  of this  Section,  Peter  C.  Burk  may
transfer up to 49% of his stock in Grantor at anytime  without  having to obtain
Secured Party's approval or qualifying under any of the other provisions of this
Agreement.

(e) Notice. All notices,  requests,  demands,  claims, and other  communications
hereunder  will be in writing.  Any notice,  request,  demand,  claim,  or other
communication hereunder shall be deemed duly given upon receipt if it is sent by
registered or certified  mail,  return receipt  requested,  and addressed to the
intended recipient as set forth below:

        If to the Secured Party:    Gentner Communications Corporation
                                    1825 Research Way
                                    Salt Lake City, Utah 84119
                                    Attention: James A. Valeo, General Counsel
                                    Telefax: 801-974-3798


        If to the Grantor:          Burk Technology, Inc.
                                    7 Beaver Brook Road
                                    Littleton, MA 01460
                                    Attention:____________________
                                    Telefax:

        Copy to:                    Noel R. Bartsch Esq.
                                    PO Box 7581
                                    Fitchburg, MA 01420
                                    Telefax:____________________


        (f) Any Party may send any  notice,  request,  demand,  claim,  or other
communication hereunder to the intended recipient at the address set forth above
using any other means (including personal delivery, expedited courier, messenger
service,  telecopy,  telex,  ordinary  mail,  or electronic  mail),  but no such
notice,  request,  demand, claim, or other communication shall be deemed to have
been duly  given  unless  and until it  actually  is  received  by the  intended
recipient. Any Party may change the address to which notices, requests, demands,
claims,  and other  communications  hereunder  are to be delivered by giving the
other Parties notice in the manner herein set forth.

        (g) Waivers.  None of the terms or provisions  of this  Agreement may be
waived, except by a written instrument executed by the party waiving the term or
provision.

        (h)  Entire  Agreement.  This  Agreement,  together  with  the  Purchase
Agreement  and the Note,  constitutes  the entire  agreement of the parties with


                                      E-38


respect  to  the  matters  contemplated  hereby  and  supersedes  any  prior  or
contemporaneous  agreements  between  the parties  whether  written or oral with
respect to said loans.

        (i) Dispute  Resolution.  Any dispute  arising out of, or in  connection
with, this Agreement,  including any question regarding its existence,  validity
or  termination,  shall be  settled  by final and  binding  alternative  dispute
resolution  ("ADR") as follows:  first,  by good faith  negotiation  between the
parties for a period of no more than ten (10) days  following  written notice by
the disputing party to the other party of such dispute;  second,  if unresolved,
by  non-binding  meditation  for a period of thirty  (30) days before a mutually
satisfactory  mediator;  and third, if still unresolved  following  mediation or
following  fifteen  (15)  days with the  parties  being  unable to agree  upon a
mediator,  by binding arbitration in the location of the non-initiating  party's
executive  office,  before a single  arbitrator  under the rules of the American
Arbitration  Association.  The  parties  agree to utilize the courts only to: a)
enforce the final decision  resulting from  application of this Section;  and b)
obtain such injunctive  relief as is necessary to avoid irreparable harm pending
such  final  decision  under  this  Section.  In the  event  of  issuance  of an
injunction,  the parties  agree to promptly  cooperate as necessary to remove or
modify the  injunction to be consistent  with any interim or final ADR decision.
Each party  shall bear all of its own costs and  expenses  and  one-half  of the
costs and expenses of any mediator or arbitrator.

        (j) Counterparts. This Agreement may be executed in counterparts, all of
which together shall constitute one and the same original.



                                      E-39



        IN WITNESS WHEREOF,  the parties have duly executed this Agreement as of
the day and year first above written.

GRANTOR:                             SECURED PARTY

Burk Technology, Inc.                Gentner Communications Corporation

By:/s/Peter C. Burk                  By:/s/Frances M. Flood
   --------------------------           ----------------------------------------
   Peter C. Burk, President             Frances M. Flood, President & CEO



                                      E-40



                                    EXHIBIT C

                              COMMISSION AGREEMENT

AGREEMENT  made this  12th day of April,  2001  ("Agreement"),  between  Gentner
Communications  Corporation (the "Seller"),  a Utah  corporation  having a usual
place of  business  at 1825  Research  Way,  Salt Lake  City,  UT 84119 and Burk
Technology, Inc. (the "Buyer"), a Massachusetts corporation having a usual place
of business at 7 Beaver Brook Road, Littleton, MA 01460

BACKGROUND:

The Parties have executed an Asset Purchase Agreement (the "Asset Agreement") by
which Buyer has purchased  Seller's Remote  Facilities  Management  Product Line
(the "Business").

Buyer  will  combine  the  Business  with the  manufacture  and sale of  Buyer's
pre-existing   Remote   Facilities   Management   Product  Line  (the  "Combined
Business").

The Asset Agreement  provides that part of the  consideration  which Seller will
receive for the sale of the Business will consist of  commission  payments for a
limited  period of time  calculated  against  Buyer's sales  resulting  from the
Combined Business ("Commission Payments").

NOW,  THEREFORE,  for  and in  consideration  of the  promises  and  the  mutual
covenants and agreements herein contained, and the mutual benefits to be derived
here from and from the transactions provided for herein, the parties,  intending
to be legally bound hereby, agree as follows:

1.  Definitions.

        a) "Annual  Combined  Commission Base" is the sum of Buyer's Base Amount
plus Seller's Base Amount equaling a total of $4,400,000,  or a prorated portion
thereof for any partial calendar year.

        b) "Buyer's Base Amount " is $1,922,000--which resulted from calculating
Buyer's  average net sales for all of Buyer's  products for calendar years 1999,
1998, and 1997.

        d)  "Commission  Rate" shall equal:  0% during  calendar  year 2001;  5%
during calendar years 2002 and 2003; and 15% during  calendar years 2004,  2005,
2006 and 2007, or until  $700,000 in Commission  Payments are earned,  whichever
occurs first.

        e)  "Final  Annual  Commission"  shall be a dollar  amount  equal to the
product obtained during the Commission Period by multiplying the Commission Rate


                                      E-41


applicable for the calendar year in question (or portion  thereof if $700,000 in
aggregate  Commission  Payments are earned by Seller prior to December 31, 2007)
by the number obtained after subtracting the Annual Combined Commission Base for
such year (or portion  thereof)  from  Buyer's  final Net Sales for the Combined
Business during such year (or portion thereof).

        f) "Net Sales" shall be the gross invoice  amount  invoiced by Buyer for
the Combined  Business  during the period in question  less any  deductions  for
insurance, returns, freight, or discounts on such sales during this same period.

        g) "Seller's Base Amount" is initially  $2,478,000--which  resulted from
calculating 90% of Seller's FY 2000 sales from the Business.

        i) "Commission  Payment  Period" is the period during which  Commissions
are earned by Seller as provided in paragraph d) of this Section 1.

2.  Commission  Payments.  Beginning  in  calendar  year 2002,  Seller  shall be
entitled to Commission Payments which shall be calculated and paid as follows:

Commencing  on January  31,  2003 and each  January 31  thereafter  (or the next
succeeding  business  day if  such  date  is not a  business  day),  during  the
Commission  Payment  Period,  Buyer shall  provide  Seller with the Final Annual
Commission together with documentation  summarizing the calculation resulting in
this payment.  (If Seller earns $700,000 in total  Commission  Payments prior to
December  31, 2007,  the Final  Annual  Commission  and  documentation  shall be
provided  by Buyer to Seller  within 45  calendar  days of the date on which the
$700,000 total is earned.) [Deletion]

3.  Accounting.  Representatives  of Seller  shall have  reasonable  access upon
reasonable  notice  during  normal  business  hours to such books and records of
Buyer  pertaining  thereto for the purpose of verifying the  calculation  of the
Annual Commission.

4. Resolution of Disputes.  Any dispute  arising out of, or in connection  with,
this  Agreement,  including any question  regarding its  existence,  validity or
termination,   shall  be  settled  by  final  and  binding  alternative  dispute
resolution  ("ADR") as follows:  first,  by good faith  negotiation  between the
parties for a period of no more than ten (10) days  following  written notice by
the disputing party to the other party of such dispute;  second,  if unresolved,
by  non-binding  meditation  for a period of thirty  (30) days before a mutually
satisfactory  mediator;  and third, if still unresolved  following  mediation or
following  fifteen  (15)  days with the  parties  being  unable to agree  upon a
mediator,  by binding arbitration in the location of the non-initiating  party's
executive  office,  before a single  arbitrator  under the rules of the American
Arbitration  Association.  The  Parties  agree to utilize the courts only to: a)
enforce the final decision  resulting from  application of this Section;  and b)
obtain such injunctive  relief as is necessary to avoid irreparable harm pending
such  final  decision  under  this  Section.  In the  event  of  issuance  of an
injunction,  the Parties  agree to promptly  cooperate as necessary to remove or
modify the  injunction to be consistent  with any interim or final ADR decision.
Each party  shall bear all of its own costs and  expenses  and  one-half  of the
costs and expenses of any mediator or arbitrator.


                                      E-42


5.  Miscellaneous.

a)  Notices.  Any  notice  under  this  Agreement  shall be given in  writing by
depositing the same in the United States mail, postage prepaid, or registered or
certified  mail,  return receipt  requested,  to the addresses  appearing in the
Preamble to this Agreement.

b) Successors and Assigns. This Agreement and all of the provisions hereof shall
be binding upon and inure to the benefit to the Parties hereto, their successors
and assigns. Subject to the other provisions of this Paragraph Seller may freely
assign this Agreement, and its rights and obligations hereunder, without seeking
the consent of Buyer. Buyer may freely assign this Agreement, and its rights and
obligations  hereunder,  to an  affiliate  of Buyer or (with the  prior  written
consent of Seller,  which consent may not be  unreasonably  withheld) to a third
party.  Except as set forth in the next  sentence,  any  assignment of the Asset
Purchase  Agreement  by either  Party must also  include an  assignment  of this
Commission Agreement, Security Agreement,  Non-Compete Agreement and Installment
Note,  executed of even date  herewith by the Parties.  Any  assignment  of this
Commission Agreement,  Security Agreement,  and Installment Note by Seller to an
affiliate must be conditioned upon Seller remaining jointly and severally liable
for the  performance  of all the  obligations  under such documents and must not
void Buyer's right to offset against amounts due under the Installment  Note and
Commission  Agreement  as  allowed  in  Section  9.1  c) of the  Asset  Purchase
Agreement.  Notwithstanding any of the provisions of this Section, Peter C. Burk
may transfer up to 49% of his stock in Buyer at anytime without having to obtain
Seller's  approval  or  qualifying  under  any of the other  provisions  of this
Agreement.

c)  Amendments.  This  Agreement  supersedes  and annuls any prior  contracts or
agreements  between  the  Parties  and  may  be  amended  only  by  the  written
concurrence of the Party to be bound by any amendment.



                                      E-43


IN WITNESS  WHEREOF,  the Parties  hereto,  intending to be legally bound,  have
caused  this  Agreement  to be  executed  by  their  authorized  representatives
(hereunto  declaring to be duly  authorized) on and as of the day and date first
above set forth.

SELLER:                                     BUYER:

Gentner Communications Corporation          Burk Technology, Inc.

BY:/s/Frances M. Flood                      By: /s/Peter C. Burk
   ------------------------------               -------------------------
Frances M. Flood, President & CEO           Peter C. Burk, President




                                      E-44




                                    EXHIBIT D

                      COVENANT AGAINST COMPETITION


THIS COVENANT AGAINST  COMPETITION  ("Covenant")  made as the 12th day of April,
2001 among BURK TECHNOLOGY,  INC., a Massachusetts corporation with offices at 7
Beaver Brook Road,  Littleton,  MA 01460  ("Buyer")  and GENTNER  COMMUNICATIONS
CORPORATION a Utah corporation having a usual place of business at 1825 Research
Way, Salt Lake City UT 84119 ("Seller").

Seller and Buyer are parties to a certain Asset  Purchase  Agreement  ("Purchase
Agreement")  pursuant to which Buyer is purchasing certain assets of Seller used
in  the  Remote  Facilities  Management  Product  Line  (the  "Business").  As a
condition to such  purchase and as an integral  part of the Purchase  Agreement,
Buyer has  required  that  Seller  enter  into this  Covenant  with Buyer not to
compete with Buyer in the Business as hereafter set forth;

NOW,  THEREFORE,  in  consideration  of the premises and other good and valuable
consideration,  receipt  and  adequacy of which is hereby  acknowledged,  and to
induce Buyer to close under the aforementioned  Purchase Agreement,  the parties
agree as follows:

1.  IDENTIFICATION  OF PAST AND PRESENT  EMPLOYEES  AND  CONSULTANTS.
a) Seller represents, warrants and covenants that: i) the individuals identified
at Schedule 1, hereto, are all the current employees of Seller who were (or are)
critical to development  and management of the Business (the  "Employees");  ii)
each of the Employees has executed an agreement  with the Seller  (collectively,
the   Non-Compete   Agreements   i)  by  which  such   Employee   makes  certain
Non-Disclosure, Invention Rights, and Non-Compete commitments to the Seller (the
"Proprietary  Covenants")  which by their terms may be  assignable to Buyer with
respect  to the  Business  since  Buyer is  Seller's  successor  and  assign  to
ownership of the Business  (although Buyer acknowledges that the language of the
Non-Compete Agreements is not precise with respect to an assignment of less than
all of the  business  of Seller);  and iii) by signing  this  Agreement,  Seller
hereby assigns the Proprietary  Covenants to Buyer and agrees to assist Buyer in
enforcing same as described in Section 3 of this Agreement.

b) Seller represents,  warrants, and covenants that, to its knowledge,  that: i)
all the former  employees  or  consultants  of Seller  (past as well as present)
critical to  development  and  management  of the Business  during the past five
years are  identified at Schedule 2, hereto (the "Other  Individuals");  and ii)
except as identified at Schedule 2, the Other  Individuals  have no  Non-Compete
Agreements with Seller which are presently  enforceable by Seller and assignable
to Buyer as the successor to the Business.


                                      E-45


2.      COVENANTS AGAINST COMPETITION AND NON-DISCLOSURE.
(a) Covenant Against Competition and Non-Disclosure. Seller agrees that for five
(5) years following the Closing Date (as defined in the Purchase Agreement) (the
"Term"),  it shall not in any status or capacity,  including without limitation,
as an officer,  director,  employee,  employer,  partner,  consultant,  advisor,
investor,  lender,  owners or principal,  or in any other  capacity  whatsoever,
directly  or  indirectly:  (i)  engage  in  the  Business  or  in  any  business
competitive with the Business  anywhere in the world (ii) interfere with Buyer's
business  by  soliciting  any  customer  that was a  customer  of  Seller or any
customer of Buyer during the Term hereof,  for any business which is the same or
is competitive  with or in competition  with the Business,  (iii) interfere with
the Business by directly or indirectly  persuading or attempting to persuade any
customer who was formerly a customer of Seller not to become a customer of Buyer
or any person or  customer  not to become a customer  of or to  discontinue  its
business  (present or prospective)  with Buyer, (iv) interfere with the Business
by  persuading  or  attempting  to persuade  any person or customer of Seller or
Buyer  to do  business  with  any  other  person,  firm,  company,  partnership,
association or entity whatsoever,  which is in business  competitive with, or in
competition  with  Buyer,  (v)  interfere  with the  Business by  persuading  or
attempting  to persuade  any person or entity who was or is a supplier to either
Seller or Buyer to either  not  establish  a  relationship  with or  discontinue
business  with  Buyer,  (vi)  interfere  with  the  Business  by  persuading  or
attempting  to persuade  any  supplier  of Buyer to do  business  with any other
person, firm, company,  partnership,  association or entity whatsoever, which is
in a business  competitive,  or in  competition  with,  Buyer or (vii)  solicit,
persuade or encourage any employees of Buyer to leave employment of such Buyer.

Seller does hereby  expressly  acknowledge that the provisions set forth in this
Covenant,  including the description of the prohibited activities and the length
of covenant and area are reasonable and appropriate.

It is  intended  and agreed  that in the event any  portion of this  Covenant is
judicially  held to be invalid  or  unenforceable,  for  whatever  reason,  such
invalid  portion of this  Covenant  shall be treated  and  considered  modified,
revised and limited in such  manner and to such  extent as may be  necessary  to
make  that  portion  and the  remaining  portions  of this  Covenant  valid  and
enforceable  to the maximum  extent  permitted  by law.  Any court of  competent
jurisdiction  shall have the power to modify  this  Covenant in order to make it
conform to what the Court shall determine to be reasonable for the terms of this
Covenant rather than rendering the entire Covenant invalid.

(b) Non-Disclosure.  Seller acknowledges that it has obtained, and in connection
with the  Purchase  Agreement is selling and  conveying to Buyer,  confidential,
proprietary  and  nonpublic  information  and trade  secrets  pertaining  to the
Business  and Buyer,  including,  without  limitation,  books,  customer  lists,
distribution agreements,  vendor lists, records, customer and vendor reports and
records,  inventory and product cost records and reports, and operating reports,
and other  information  relating to the Business'  customers,  trade  practices,
trade  secrets or know-how (all of the  foregoing  referred to as  "Confidential
Information")  and that,  by having  done or been  involved  in the  Business on
behalf  of  Seller,  either  may  receive  and will  continue  to  receive  such


                                      E-46


Confidential Information,  which at all times shall remain the property of Buyer
and shall not be used or  disclosed  by  Seller's  employees  without  the prior
written consent of Buyer.

3. SELLER'S ENFORCEMENT  ASSISTANCE.  Seller agrees to use reasonable efforts to
enforce the  Proprietary  Rights with respect to the Business on Buyer's behalf,
to  the  extent  enforceable  in  light  of  the  language  of  the  Non-Compete
Agreements:  as long as an  employment  relationship  continues;  at the time of
termination  of such  relationship;  and in the case of the  Non-Disclosure  and
Invention Rights, after such relationship ceases.

4. IRREPARABLE  HARM.  Seller  acknowledges and agrees that breach of any of the
covenants,  conditions or provisions  contained in this  Agreement may result in
irreparable  harm and damage to Buyer and such harm and damage will be extremely
difficult or impossible to quantify.  Accordingly, Seller hereby consents to the
jurisdiction of any court having  equitable  jurisdiction and to the entry of an
injunction,   temporary  or  permanent,  enjoining  it  them  from  any  further
violations of this Agreement.

5. REMEDIES CUMULATIVE;  WAIVER. All rights,  powers and remedies of the Parties
hereunder (or by law,  equity or statute  permitted)  are cumulative and may, to
the extent  permitted  by law, be  exercised  concurrently  or  separately.  The
exercise  of any one  right,  power  or  remedy  shall  not be  deemed  to be an
exclusive  election of such right or remedy or to preclude  the  exercise of any
other right or remedy.  No failure on the part of any Party to exercise,  and no
delay in exercising,  any right,  power or remedy  hereunder  shall operate as a
waiver thereof or an  acquiescence  therein or of, any similar breach or default
thereafter  occurring;  nor shall any single or partial exercise by any Party of
any  right,  power or remedy  hereunder  preclude  any other or future  exercise
thereof or the  exercise of any other  right or remedy.  Nor shall any waiver of
any  single  breach  or  default  be deemed a waiver  or any  breach or  default
theretofore or thereafter  occurring.  Any waiver, permit or consent or approval
of any kind or  character  on the part of either  Party  hereto of any breach or
default under this Agreement or any other waiver on the part of any Party hereto
of any provision or condition of this Agreement, must be in writing and shall be
effective only to the extent specifically allowed by such writing.

6. EXPENSES.  Upon the occurrence of a default, the Party seeking enforcement of
this  Agreement  as a result  thereof  shall have the right to collect  from the
defaulting  Party, in addition to any and all other amounts owing, all costs and
expenses incurred in the enforcement of its rights hereunder including,  but not
limited to, reasonable attorney's fees.

7. NOTICES. All notices and other communications required or permitted hereunder
shall be deemed to have been  duly  given and made if in  writing  and if served
either  by  personal  delivery,  by  facsimile,  when  mailed  by  certified  or
registered mail, return receipt requested or when sent by nationally  recognized
overnight  express courier service.  Notices delivered in person or by facsimile
shall be deemed given on the date so delivered or transmitted. Notices delivered
by private  overnight express courier shall be deemed given on the next business
day after deposit  thereof (if deposited  prior to the  applicable  deadline for
next day delivery). Notices Sent by mail shall be deemed given on the earlier of


                                      E-47


the date I actually  received by the  addressee or the fifth  business day after
mailing.

8. ENTIRE AGREEMENT This Covenant, constituting an integral part of the Purchase
Agreement,  embodies  the entire  agreement  of the  Parties and any other prior
representations,   inducements,  promises  and  agreements,  or  otherwise,  not
included herein,  will have no force or effect in the construction of the rights
and obligations of the Parties created by this Covenant. This Covenant shall not
be altered,  modified or  contradicted  by evidence of prior or  contemporaneous
oral or written  understandings or agreements,  course of dealing,  usage of the
trade or course of  performance,  but may only be modified by mutually  executed
amendment referencing this Covenant.

9. TITLES TO  PARAGRAPHS.  The various titles of paragraphs of this Covenant are
used  solely  for  the  purpose  of  convenience  and  shall  not  be  used  for
interpreting or construing any word, clause,  paragraph or subparagraphs of this
Covenant.

10. GOVERNING LAW This Covenant and the  construction  thereof shall be governed
by the laws of the  Commonwealth  of  Massachusetts.  THE RIGHTS AND LIABILITIES
UNDER THIS COVENANT SHALL BE DETERMINED  [END IN ACCORDANCE WITH THE LAWS OF THE
COMMONWEALTH OF MASSACHUSETTS, EXCLUDING ITS CONFLICT OF LAWS RULES. The Parties
hereto acknowledge that this Covenant  incorporates certain negotiated terms and
therefore,  no  presumption  shall  arise  favoring  either  party by  virtue of
authorship  of any  provisions  of this  Covenant or any  documents  referred to
herein.

11.  INTERPRETATION As used herein and when required by the context, each number
(singular or plural)  shall  include all numbers,  and each gender shall include
all genders.

12.  ASSIGNMENT This Agreement and all of the provisions hereof shall be binding
upon and inure to the  benefit  to the  Parties  hereto,  their  successors  and
assigns.  Subject to the other  provisions  of this  Section,  Seller may freely
assign this Agreement, and its rights and obligations hereunder, without seeking
the consent of Buyer. Buyer may freely assign this Agreement, and its rights and
obligations  hereunder,  to an  affiliate  of Buyer or (with the  prior  written
consent of Seller,  which consent may not be  unreasonably  withheld) to a third
party. Except as set forth in the next sentence,  any assignment of the Purchase
Agreement  by either  Party must also include an  assignment  of the  Commission
Agreement,  Security  Agreement,  Non-Compete  Agreement and  Installment  Note,
executed of even date herewith by the Parties.  Any assignment of the Commission
Agreement,  Security  Agreement,  and Installment Note by Seller to an affiliate
must be conditioned upon Seller  remaining  jointly and severally liable for the
performance  of all the  obligations  under  such  documents  and  must not void
Buyer's  right to offset  against  amounts  due under the  Installment  Note and
Commission  Agreement  as allowed in Section 9.1 c) of the  Purchase  Agreement.
Notwithstanding  any of the  provisions  of this  Section,  Peter  C.  Burk  may
transfer  up to 49% of his stock in Buyer at  anytime  without  having to obtain
Seller's  approval  or  qualifying  under  any of the other  provisions  of this
Agreement.


                                      E-48


13. NO THIRD PARTY  BENEFICIARIES.  Nothing  herein,  expressed  or implied,  is
intended or shall be  construed  to confirm  upon or give to any  person,  firm,
corporation or legal entity, other than the Parties hereto, any rights, remedies
or other benefits under or by reason of this Covenant.

14.  NO  PARTNERSHIP.  Nothing  contained  in this  Covenant  shall be deemed or
construed  by  the  Parties  hereto  or  by  any  third  person  to  create  the
relationship or principal and agent or of partnership or of joint venture.

IN WITNESS WHEREOF, and intending to be legally bound hereby, the Parties hereto
have executed this Covenant as of the day and year first above written.


SELLER:                                     BUYER:
GENTNER COMMUNICATIONS                      BURK TECHNOLOGY, INC. CORPORATION

BY: /s/Frances M. Flood                     BY:/s/Peter C. Burk
    --------------------------------           ---------------------------------
    FRANCES M. FLOOD, PRES.& CEO               PETER C. BURK, PRESIDENT




                                      E-49



                                    SCHEDULE 1

PRESENT  EMPLOYEES

Gary Crowder
Gene Kuntz
Renea Ruppe
Mario Ninic
Justin Wiker
Ryan Turner
Guy Leishman
Rex McDonald

                                    SCHEDULE 2

PAST EMPLOYEES AND CONSULTANTS--PAST OR PRESENT

Kim  Mansfield
David Scott
Buck Buchanan
Clay McMillan
Bill Gillman
Patrick Carter
Steve Olsen
Steve McDermott
Larry Howard
Bogdana Alexanrova




                                      E-50


                                    EXHIBIT E

                                  BILL OF SALE

Bill of Sale  dated and  delivered  on this 12TH day of April,  2001 by  GENTNER
COMMUNICATIONS  CORPORATION,  a Utah  corporation  with offices at 1825 Research
Way,  Salt  Lake  City UT 84119  (the  "Seller")  to BURK  TECHNOLOGY,  INC.,  a
Massachusetts  corporation  with offices at 7 Beaver Brook Road,  Littleton,  MA
01460 ( the "Buyer")

                                   WITNESSETH:

WHEREAS,  Seller and Buyer are  parties to a certain  Asset  Purchase  Agreement
dated as of April 12, 2001 (the "Agreement") which provides, among other things,
for the sale by the Seller of certain of Seller's assets ;

NOW,   THEREFORE,   in  consideration  of  the  payments,   consideration,   and
consummation of the transactions provided for in the Agreement, Seller covenants
and agrees as follows:

1.  CONVEYANCE:  On and as of the date hereof,  Seller hereby sells,  transfers,
assigns,  grants, conveys and delivers to Buyer good and marketable title to all
of the assets as  identified  at Appendix I to this Bill of Sale,  which  assets
shall be free and  clear of all  mortgages,  liens,  leases,  pledges,  charges,
encumbrances,  equities, covenants, conditions,  restrictions or claims of every
nature and kind whatsoever.

2. FURTHER ASSURANCES:  For the consideration  aforesaid,  Seller covenants with
Buyer,  its successors,  and assigns,  that Seller will execute and deliver such
other and further documents of conveyance, assignment, transfer and consent, and
take such other action as Buyer may  reasonably  request for the more  effective
conveyance and transfer of the included  assets to Buyer,  its  successors,  and
assigns.



                                      E-51



IN WITNESS  WHEREOF,  Seller has caused this Bill of Sale to be duly executed as
of the date first written above.


                                    Gentner Communication Corporation


                                    By:  /s/Frances M. Flood
                                         ------------------------
                                         Frances M. Flood
                                         Its President & CEO












                                      E-52



                                   Appendix I


                            [INTENTIONALLY OMMITTED]













                                      E-53