Document:

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                                                                   EXHIBIT 10(b)

                           REGENT COMMUNICATIONS, INC.
                        2001 DIRECTORS' STOCK OPTION PLAN

         Regent Communications, Inc. (the "Company") has, by appropriate
resolution of its Board of Directors, adopted the following Regent
Communications, Inc. 2001 Directors' Stock Option Plan to be effective
immediately upon its approval by the Company's stockholders.

         1. DEFINITIONS. The following terms, when capitalized, shall have the
designated meanings set forth below, unless a different meaning is plainly
required by the context. Where applicable, the masculine pronoun shall include
the feminine, and the singular shall include the plural and vice versa.

            a. BOARD. "Board" shall mean the Board of Directors of Regent
Communications, Inc., as it may be comprised from time to time.

            b. CODE. "Code" shall mean the Internal Revenue Code of 1986, as
amended from time to time, and the rules and regulations promulgated thereunder.
Any specific provision of the Code referenced herein shall be deemed to refer to
the corresponding provision of any amendment, revision or successor of the Code
or such provision as may be adopted in lieu of the referenced provision.

            c. COMMON STOCK. "Common Stock" shall mean shares of the Company's
authorized voting common stock.

            d. COMPANY. "Company" shall mean Regent Communications, Inc.

            e. DIRECTOR. "Director" shall mean a member of the Board of
Directors of the Company.

            f. EMPLOYEE. "Employee" means any person, including officers and
Directors, employed by the Company or any parent or subsidiary of the Company.
The payment of a Director's fee by the Company shall not be sufficient in and of
itself to constitute "employment" by the Company.

            g. EXCHANGE ACT. "Exchange Act" means the Securities Exchange Act of
1934, as amended from time to time, and the rules promulgated thereunder. Any
specific provision of the Exchange Act referenced herein shall be deemed to
refer to the corresponding provision of any amendment, revision or successor of
the Exchange Act or such provision as may be adopted in lieu of the referenced
provision.

            h. EXERCISE DATE. "Exercise Date" shall mean the calendar date on
which a Participant exercises an Option granted under the Plan.

            i. EXERCISE PERIOD. "Exercise Period" shall mean that period of time
during which an Option granted under the Plan may be exercised, determined in
accordance with paragraph 7 hereof.

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            j. EXERCISE PRICE. "Exercise Price" shall mean that price for which
a share of Common Stock may be purchased pursuant to an Option, determined in
accordance with paragraph 6 hereof.

            k. GRANT DATE. "Grant Date" shall mean the calendar date on which
the grant of an Option is made under the Plan, determined in accordance with
paragraph 5 hereof.

            l. OPTION. "Option" shall mean a Non-Qualified Stock Option granted
or to be granted under the Plan for the purchase of a fixed number of shares of
Common Stock at a fixed Exercise Price.

            m. OUTSIDE DIRECTOR. "Outside Director" shall mean a Director who is
not an Employee of the Company and does not receive compensation from the
Company or a parent or subsidiary of the Company for services rendered as a
consultant or in any capacity other than as a Director.

            n. PARTICIPANT. "Participant" shall mean an Outside Director to whom
an Option has been granted under the Plan, but which Option has not expired,
exercised in full, forfeited or otherwise terminated or satisfied under the
Plan.

            o. PLAN. "Plan" shall mean Regent Communications, Inc. 2001
Directors' Stock Option Plan as set forth herein.

            p. RULE 16B-3. "Rule 16b-3" means Rule 16b-3 of the General Rules
and Regulations of the Exchange Act or any successor rules or regulations which
may hereafter be adopted in lieu thereof. Any reference to a specific provision
of Rule 16b-3 shall refer to the corresponding provision of Rule 16b-3 as
amended or replaced.

         2. PURPOSE. The purpose of the Plan is to attract and retain the best
available persons for service as Outside Directors of the Company, to provide
additional incentive to the Outside Directors of the Company to serve as
Directors, and to encourage their continued service on the Board.

         3. ELIGIBILITY. Options may be granted only to Outside Directors. All
Options shall be automatically granted in accordance with the terms of the Plan.

         4. SHARES SUBJECT TO THE PLAN. Subject to adjustments provided in
paragraph 13 hereof, the aggregate number of shares of Common Stock that may be
delivered pursuant to the exercise of Options granted under the Plan shall not
exceed Five Hundred Thousand (500,000) shares. Such shares may consist, either
in whole or in part, of the Company's authorized but unissued Common Stock or
shares of the Company's authorized and issued Common Stock reacquired by the
Company and held in its Treasury, as may from time to time be determined by the
Board. If an Option granted under the Plan is surrendered, expires unexercised
or for any reason ceases to be exercisable in whole or in part, the shares of
Common Stock that were issuable pursuant to such Option, but as to which the
Option was not exercised, shall again be available for the purposes of the Plan.

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         5. OPTION GRANTS. Options shall be granted to Outside Directors in
accordance with the following provisions:

            a. Initial Grant:

               (1) Each Director who is an Outside Director on the date of the
first meeting of the Board of Directors subsequent to receipt of stockholder
approval of this Plan shall be automatically granted an Option to purchase Ten
Thousand (10,000) shares PLUS Five Thousand (5,000) additional shares for each
calendar year during which he served as an Outside Director subsequent to the
initial calendar year during which he first became an Outside Director. The date
of such meeting shall be deemed the Grant Date for such Option.

               (2) Each Outside Director who first becomes an Outside Director
after the first Board meeting subsequent to receipt of stockholder approval of
this Plan shall be automatically granted an Option to purchase Ten Thousand
(10,000) shares on the date of his first attendance at a meeting of the Board of
Directors. The date of such meeting shall be deemed the Grant Date for such
Option.

            b. Annual Grant:

               (1) Beginning with the Anniversary Meeting in the calendar year
following the year of his Initial Grant, each Outside Director shall be
automatically granted a further Option to purchase Five Thousand (5,000) shares
each year on the date of the annual Anniversary Meeting, provided, however, that
he is then an Outside Director. The Anniversary Meeting each year shall be the
first meeting of the Board of Directors following the annual stockholders'
meeting of the Company. The date of such meeting shall be deemed the Grant Date
for such Option.

         6. EXERCISE PRICE. The Exercise Price for each Option granted under the
Plan shall be 100% of the Fair Market Value of a share of the Common Stock on
the Grant Date. Fair Market Value of the Common Stock on the Grant Date of an
Option shall be determined as follows:

            a. If the Common Stock is listed on a national securities exchange,
the fair market value shall be the average of the highest and lowest selling
price of a share of Common Stock on such exchange on the Grant Date, or if there
were no sales on such date, then on the next prior business day on which there
were sales.

            b. If the Common Stock is traded other than on a national securities
exchange, the fair market value shall be the average between the closing bid and
asked price on the Grant Date, as reported by the National Association of
Securities Dealers Automated Quotation System or such other source of quotations
for, or reports of trading of, the Common Stock as the Committee may reasonably
select from time to time, or if there is no bid and asked price on said date,
then on the next prior business day on which there was a bid and asked price.

            c. If neither of the methods described in (i) or (ii) above is
available or accurately reflects fair market value, then the Board shall make a
good faith determination of the fair market value using any reasonable method of
valuation.

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         7. TERM OF OPTION. The Exercise Period of each Option granted shall
commence six (6) months from the Grant Date of the Option and, except as set
forth below, shall expire ten (10) years from the Grant Date.

            Any Option granted under the Plan shall terminate and may no longer
be exercised if the Participant ceases to be an Outside Director, except as
follows:

            a. If a Participant's service as an Outside Director shall have been
terminated for any reason other than his death or disability within the meaning
of Section 22(e)(3) of the Code, he may at any time within a period of six (6)
months thereafter, exercise any Option held by him to the extent the Option was
exercisable by him on the date of termination;

            b. If a Participant's service as an Outside Director is terminated
due to his disability within the meaning of Section 22(e)(3) of the Code, he may
at any time within a six (6) month period thereafter, exercise any Option held
by him to the extent the Option was exercisable by him on the date of
termination;

            c. If a Participant dies while serving as an Outside Director, any
Option held by him at his death, to the extent the Option was exercisable by the
deceased Participant at his death, may be exercised within six (6) months after
his death by the person or persons to whom the Participant's rights shall pass
by will duly admitted to probate, or in the absence of any provision by will
duly admitted to probate, by the executor or administrator of his estate duly
qualified and appointed under the laws of the decedent's domicile at the time of
his death;

PROVIDED, HOWEVER, that in no event may an Option be exercised to any extent by
any person after its Expiration Date.

         8. EXERCISE OF OPTION. During the period when any Option, or a portion
of it, remains exercisable, such Option may be exercised at any time in whole or
in part. Options may be exercised from time to time by delivering to the
Treasurer of the Company written notice of exercise, stating the number of
shares of Common Stock with respect to which an Option is being exercised, along
with payment of the Exercise Price for such shares by (a) cash or check payable
to the Company; (b) delivery of shares of Common Stock; or (c) a combination of
the preceding two methods. Payment by delivery of shares of Common Stock may
include (i) the delivery of Common Stock already owned by the Participant; or
(ii) the exchange, arranged through a qualified broker approved by the Board of
Directors, of Common Stock to be received from the exercise of the Option, with
the result that the Participant will receive from the exercise a net number of
shares of Common Stock represented by the difference between the total number of
shares with respect to which the Option is being exercised and that number of
shares, the fair market value of which is equal to the full Exercise Price
(including any tax withholding to the Company) for all shares of Common Stock
with respect to which the Option is exercised. Any shares of Common Stock
delivered in payment of an Exercise Price shall be valued as of the Exercise
Date in accordance with paragraph 6 hereof.

         9. NONTRANSFERABILITY OF OPTIONS. An Option granted under the Plan is
not transferable, except by will or by the laws of descent and distribution,
and, during the lifetime of the

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Participant to whom granted, is exercisable only by him or in the event of his
disability, his personal representative. Notwithstanding the foregoing, an
Option may be transferred pursuant to a Qualified Domestic Relations Order as
defined in Section 414(p) of the Code.

         10. NO EFFECT ON STATUS AS DIRECTOR. Nothing contained in the Plan or
in any option agreement issued in connection herewith shall be construed to
confer upon a Participant any right with respect to continuation of service as a
Director or nomination to serve as a Director nor shall it limit or restrict the
right of the Company to terminate a Participant's relationship with the Company
at any time.

         11. ADJUSTMENT OF SHARES SUBJECT TO OPTION. In the event there is any
change in the Common Stock of the Company subject to the Plan through the
declaration of stock dividends, or through recapitalization resulting in stock
split-ups, or combinations or exchanges of shares, or otherwise, the number of
shares of Common Stock available for the granting of Options under the Plan and
the shares of Common Stock subject to any Option granted under the Plan shall be
appropriately adjusted.

         12. EFFECTIVE DATE OF THE PLAN. The Plan shall be effective immediately
upon its approval and adoption by stockholders holding a majority of the
Company's shares entitled to vote thereon.

         13. SUSPENSION OR TERMINATION OF THE PLAN. The Board of Directors may
at any time suspend or terminate the Plan. Unless the Plan shall theretofore
have been terminated by the Board of Directors, the Plan shall terminate at the
close of business on the tenth anniversary of the effective date of the Plan.
Options may not be granted during such suspension or after such termination. The
suspension or termination of the Plan shall not, without the consent of the
holders of Options granted under the Plan, alter or impair any rights or
obligations under any Option previously granted under the Plan.

         14. AMENDMENT OF THE PLAN. The Board may at any time amend the Plan in
such respect as the Board may deem advisable in order to conform to any change
in the law, or in any other respect the Board may deem to be in the best
interest of the Company; provided, however, that no such amendment shall be made
without approval of the holders of a majority of all shares of the Company's
issued and outstanding shares entitled to vote thereon to the extent that
stockholder approval would be required by Rule 16b-3 of the Exchange Act or by
the rules of any stock exchange or market quotation system to which the Company
is subject. Any amendment to the Plan shall not alter or impair any rights or
obligations under any Option theretofore granted under the Plan without the
consent of the holder thereof.

         15. ADMINISTRATION.

            a. Each Option shall be evidenced by an option agreement which shall
be signed by an officer of the Company and the Participant.

            b. Each Option shall be subject to the requirement that, if at any
time the Board of Directors shall determine that the listing, registration or
qualification of the shares subject to such Option upon any securities exchange
or under any state or federal law, or the consent or approval of any
governmental regulatory body, is necessary or desirable as a condition of, or in
connection with, the granting of such Option or the issue or purchase of shares
thereunder, such Option may not be

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exercised in whole or in part unless such listing, registration, qualification,
consent or approval shall have been effected or obtained.

         16. COMPLIANCE WITH LAW AND APPROVAL OF REGULATORY BODIES. No Option
shall be exercisable and no shares will be delivered under this Plan except in
compliance with all applicable federal and state laws and regulations including,
without limitation, compliance with applicable federal and state securities
laws, withholding tax requirements and the rules of all domestic stock exchanges
and reporting systems on which the Company's shares of Common Stock may be
listed or reported, as the Committee, in its sole discretion, may deem necessary
or advisable. Any share certificate issued to evidence shares of Common Stock
for which an Option is exercised may bear legends and statements the Committee
shall deem advisable to assure compliance with federal and state laws and
regulations.

         17. MISCELLANEOUS PROVISIONS.

            a. WITHHOLDING TAXES. The Company shall have the right to require a
payment from a Participant to cover applicable withholding taxes. A Participant
may make a written election to have shares of Common Stock withheld from the
shares otherwise to be received upon the exercise of an Option and applied by
the Company to the payment of applicable taxes relative to the exercise of the
Option. The number of shares so withheld shall have an aggregate fair market
value, as determined by the Company, sufficient to satisfy the Company's minimum
statutory withholding requirements.

            b. DELAWARE LAW TO GOVERN. The Plan and all agreements entered into
under the Plan shall be interpreted pursuant to the laws of the State of
Delaware.

            c. OBLIGATIONS. Neither the Company nor the Board nor any member
thereof shall, by any provisions of the Plan, be deemed to be a trustee of any
property, and the liabilities of the Company to any Participant pursuant to the
Plan shall be those of a debtor pursuant to such contract obligation as are
created by the Plan, and no such obligation of the Company shall be deemed to be
secured by any pledge or other encumbrance on any property of the Company.

            d. CHANGE IN CONDITIONS OF THE CODE. In the event of relevant
changes in the Code, or other factors affecting the continued appropriateness of
granting Options under the Plan, the Board of Directors may, in its sole
discretion, accelerate or change the form of awarding benefits under the Plan.

            e. PURCHASE OF COMMON STOCK. The Company may, but shall not be
required to, purchase from time to time shares of Common Stock of the Company in
such amounts as they may determine for purposes of the Plan. The Company shall
have no obligation to retain, and shall have the unlimited right to sell or
otherwise deal with for their own account, any shares of Common Stock of the
Company purchased pursuant to this paragraph.

            f. PARTICIPANT'S AGREEMENT. If, at the time of the distribution of
any shares of the Common Stock of the Company hereunder, in the opinion of
counsel for the Company, it is necessary or desirable, in order to comply with
any applicable laws or regulations relating to the sale of securities, that the
Participant receiving such shares shall agree that he will take the shares for
investment and not with any present intention to resell the same and that he
will dispose of such

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shares only in compliance with such laws and regulations, the Participant will,
upon the request of the Company, execute and deliver to the Company an agreement
to such effect.

         g. RULE 16b-3 SAVINGS CLAUSE. To the extent that they apply to persons
subject to Section 16 of the Exchange Act, transactions under this Plan are
intended to comply with all applicable conditions of Rule 16b-3. Any provision
of the Plan or action by the Board shall be interpreted, wherever possible, to
comply with all applicable conditions of Rule 16b-3, and to the extent that it
does not comply, it shall be deemed to be null and void, to the extent permitted
by law and deemed advisable by the Company.

         h. NOTICE. Any notice which may be required or permitted to be given
hereunder shall be in writing, and may be delivered to the Company personally or
by registered mail, postage prepaid, addressed to: Treasurer, Regent
Communications, Inc., 100 East RiverCenter Boulevard, 9th Floor, Covington,
Kentucky 41011or at such other address as the Company, by notice to the
Participant, may designate in writing from time to time, and to the Participant,
at the Participant's address as shown on the records of the Company, or at such
other address as the Participant, by notice to the Treasurer, Regent
Communications, Inc., may designate in writing from time to time.

                                          REGENT COMMUNICATIONS, INC.

                                          By:______________________________
                                             William L. Stakelin, President

331120_3.DOC<PAGE>   1
                                                                     Exhibit 4.1

================================================================================

                               ALLEN TELECOM INC.
                                   AS BORROWER

                            THE LENDERS NAMED HEREIN
                                   AS LENDERS

                               BANK ONE, MICHIGAN
                             AS DOCUMENTATION AGENT

                                       AND

                          KEYBANK NATIONAL ASSOCIATION
                                  AS A LENDER,
                THE SWING LINE LENDER, A LETTER OF CREDIT ISSUER
 AND AS THE SYNDICATION AGENT, THE ADMINISTRATIVE AGENT AND THE COLLATERAL AGENT

                              ---------------------

                                 AMENDMENT NO. 4
                                   DATED AS OF
                                  JUNE __, 2001
                                       TO
                                CREDIT AGREEMENT
                                   DATED AS OF
                                DECEMBER 31, 1998
                              ---------------------

================================================================================

<PAGE>   2

                       AMENDMENT NO. 4 TO CREDIT AGREEMENT

         THIS AMENDMENT NO. 4 TO CREDIT AGREEMENT, dated as of June __, 2001
("THIS AMENDMENT"), among the following:

         (i)   ALLEN TELECOM INC., a Delaware corporation (herein, together with
its successors and assigns, the "BORROWER");

         (ii)  the Lenders party hereto;

         (iii) BANK ONE, MICHIGAN (which is the successor to NBD Bank) as a
Lender and as Documentation Agent (the "DOCUMENTATION AGENT"); and

         (iv)  KEYBANK NATIONAL ASSOCIATION, a national banking association, as
a Lender, the Swing Line Lender, the Letter of Credit Issuer, and as the
Syndication Agent, the Administrative Agent and the Collateral Agent under the
Credit Agreement:

         PRELIMINARY STATEMENTS:

         (1) The Borrower, the Lenders named therein, the Swing Line Lender, the
Letter of Credit Issuers, the Documentation Agent, the Syndication Agent and the
Administrative Agent entered into the Credit Agreement, dated as of December 31,
1998, as amended by Amendment No. 1 thereto, dated as of July 30, 1999,
Amendment No. 2 thereto, dated as of April 19, 2000, and Amendment No. 3
thereto, dated as of November 15, 2000 (as so amended, the "CREDIT AGREEMENT";
with the terms defined therein, or the definitions of which are incorporated
therein, being used herein as so defined).

         (2) The parties hereto desire to change certain of the terms and
provisions of the Credit Agreement, all as more fully set forth below.

         NOW, THEREFORE, the parties hereby agree as follows:

         1.   AMENDMENTS, ETC.

         1.1. AMENDMENT TO DEFINITIONS. Section 1.1 of the Credit Agreement is
hereby amended to delete the definition of "LETTER OF CREDIT ISSUER" therefrom
and to insert in place thereof the following:

                  "LETTER OF CREDIT ISSUER" shall mean (i) with respect of each
           Existing Letter of Credit and any subsequent Letter of Credit issued
           in renewal or replacement thereof, the Lender that has issued such
           Existing Letter of Credit as of the Effective Date or any other
           Lender that is approved by the Borrower, the Administrative Agent and
           the Required Lenders, and (ii) with respect to any other Letter of
           Credit, KeyBank or any other Lender (or any subsidiary or affiliate
           of such Lender designated by such Lender) that is requested, and
           agrees, to so act by the Borrower and is approved by the
           Administrative Agent and the Required Lenders.

         1.2. EXISTING BOND LETTERS OF CREDIT. The Borrower, the Administrative
Agent and each of the Lenders hereby agree that, LaSalle Bank National
Association shall replace Dresdner Bank AG as the Bond Letter of Credit Issuer
with respect to each Existing Bond Letter of Credit. In connection therewith,
the Borrower shall execute and deliver to Dresdner Bank AG and LaSalle Bank
National

<PAGE>   3

Association such applications, amendments or other documents, instruments or
agreements as Dresdner Bank AG and LaSalle Bank National Association may deem
necessary or appropriate. Such change shall be effective, and shall only be
effective, upon execution and delivery of the foregoing documents.

         1.3. CERTAIN OTHER LETTERS OF CREDIT. Effective as of the date of this
Amendment, the Borrower, the Administrative Agent and each of the Lenders hereby
agree that, Bank One, Michigan (or any subsidiary or affiliate designated by
Bank One, Michigan) may be a Letter of Credit Issuer with respect to such
Letters of Credit as the Borrower may request to provide credit enhancement or
support for the financing requirements of the operation of Borrower and its
Subsidiaries in China.

         2.   REPRESENTATIONS AND WARRANTIES. The Borrower represents and
warrants to the Lenders, the Swing Line Lender, the Letter of Credit Issuer, the
Documentation Agent, the Administrative Agent and the Collateral Agent as
follows:

         2.1. AUTHORIZATION AND VALIDITY OF AMENDMENT, ETC. This Amendment has
been duly authorized by all necessary corporate action on the part of the
Borrower, has been duly executed and delivered by a duly authorized officer of
the Borrower, and constitutes the valid and binding agreement of the Borrower,
enforceable against the Borrower in accordance with its terms, except to the
extent that the enforceability thereof may be limited by applicable bankruptcy,
insolvency, reorganization, moratorium or other similar laws generally affecting
creditors' rights and by equitable principles (regardless of whether enforcement
is sought in equity or at law).

         2.2. REPRESENTATIONS AND WARRANTIES. The representations and warranties
of the Credit Parties contained in the Credit Agreement or in the other Credit
Documents are true and correct in all material respects on and as of the date
hereof as though made on and as of the date hereof, except to the extent that
such representations and warranties expressly relate to an earlier specified
date, in which case such representations and warranties are hereby reaffirmed as
true and correct in all material respects as of the date when made.

         2.3. NO EVENT OF DEFAULT. No condition or event has occurred or exists
which constitutes or which, after notice or lapse of time or both, would
constitute a Default or an Event of Default.

         2.4. COMPLIANCE. The Borrower is in full compliance with all covenants
and agreements contained in the Credit Agreement, as amended hereby, and the
other Credit Documents to which it is a party; and without limitation of the
foregoing, each Subsidiary of the Borrower which, as of the date hereof, is
required to be a Subsidiary Guarantor, has on or prior to the date hereof become
a Subsidiary Guarantor under the Subsidiary Guaranty.

         3.   RATIFICATIONS.

<PAGE>   4

         Except as expressly modified and superseded by this Amendment, the
terms and provisions of the Credit Agreement are ratified and confirmed and
shall continue in full force and effect.

         4.   BINDING EFFECT.

         This Amendment shall become effective as of June __, 2001(the
"EFFECTIVE DATE"), so long as on or before such date this Amendment shall have
been executed by the Borrower, the Required Lenders and the Administrative
Agent, and counterparts hereof as so executed shall have been delivered to the
Administrative Agent. On and after the Effective Date, this Amendment shall be
binding upon and inure to the benefit of the Borrower, each Lender and the
Administrative Agent and their respective permitted successors and assigns.
After this Amendment becomes effective, the Administrative Agent shall promptly
furnish a copy of this Amendment to each Lender and the Borrower.

         5.   MISCELLANEOUS.

         5.1. SURVIVAL OF REPRESENTATIONS AND WARRANTIES. All representations
and warranties made in this Amendment shall survive the execution and delivery
of this Amendment, and no investigation by the Administrative Agent or any
Lender or any subsequent Loan or other Credit Event shall affect the
representations and warranties or the right of the Administrative Agent or any
Lender to rely upon them.

         5.2. REFERENCE TO CREDIT AGREEMENT. The Credit Agreement and any and
all other agreements, instruments or documentation now or hereafter executed and
delivered pursuant to the terms of the Credit Agreement as amended hereby, are
hereby amended so that any reference therein to the Credit Agreement shall mean
a reference to the Credit Agreement as amended hereby.

         5.3. EXPENSES. As provided in the Credit Agreement, but without
limiting any terms or provisions thereof, the Borrower shall pay on demand all
reasonable costs and expenses incurred by the Administrative Agent in connection
with the preparation, negotiation, and execution of this Amendment, including
without limitation the reasonable costs and fees of the Administrative Agent's
special legal counsel, regardless of whether this Amendment becomes effective in
accordance with the terms hereof, and all reasonable costs and expenses incurred
by the Administrative Agent or any Lender in connection with the enforcement or
preservation of any rights under the Credit Agreement, as amended hereby.

         5.4. SEVERABILITY. Any term or provision of this Amendment held by a
court of competent jurisdiction to be invalid or unenforceable shall not impair
or invalidate the remainder of this Amendment and the effect thereof shall be
confined to the term or provision so held to be invalid or unenforceable.

         5.5. APPLICABLE LAW. This Amendment shall be governed by and construed
in accordance with the laws of the State of Ohio, without regard to principles
of conflicts of laws.

         5.6. HEADINGS. The headings, captions and arrangements used in this
Amendment are for convenience only and shall not affect the interpretation of
this Amendment.

<PAGE>   5

         5.7. ENTIRE AGREEMENT. This Amendment is specifically limited to the
matters expressly set forth herein. This Amendment and all other instruments,
agreements and documentation executed and delivered in connection with this
Amendment embody the final, entire agreement among the parties hereto with
respect to the subject matter hereof and supersede any and all prior
commitments, agreements, representations and understandings, whether written or
oral, relating to the matters covered by this Amendment, and may not be
contradicted or varied by evidence of prior, contemporaneous or subsequent oral
agreements or discussions of the parties hereto. There are no oral agreements
among the parties hereto relating to the subject matter hereof or any other
subject matter relating to the Credit Agreement.

         5.8. COUNTERPARTS. This Amendment may be executed by the parties hereto
separately in one or more counterparts and by facsimile signature, each of which
when so executed shall be deemed to be an original, but all of which when taken
together shall constitute one and the same agreement.

                 [Remainder of page intentionally left blank.]

<PAGE>   6

         5.9. JURY TRIAL WAIVER. EACH OF THE PARTIES TO THIS AMENDMENT HEREBY
IRREVOCABLY WAIVES ALL RIGHT TO A TRIAL BY JURY IN ANY ACTION, PROCEEDING OR
COUNTERCLAIM ARISING OUT OF OR RELATING TO THIS AMENDMENT, THE OTHER CREDIT
DOCUMENTS OR THE TRANSACTIONS CONTEMPLATED HEREBY OR THEREBY. EACH PARTY HERETO
HEREBY (A) CERTIFIES THAT NO REPRESENTATIVE, AGENT OR ATTORNEY OF ANY OTHER
PARTY HAS REPRESENTED, EXPRESSLY OR OTHERWISE, THAT SUCH OTHER PARTY WOULD NOT,
IN THE EVENT OF LITIGATION, SEEK TO ENFORCE THE FOREGOING WAIVER, AND (B)
ACKNOWLEDGES THAT IT AND THE OTHER PARTIES HERETO HAVE BEEN INDUCED TO ENTER
INTO THIS AMENDMENT BY, AMONG OTHER THINGS, THE MUTUAL WAIVERS AND
CERTIFICATIONS IN THIS SECTION.

         IN WITNESS WHEREOF, this Amendment has been duly executed and delivered
as of the date first above written.

<TABLE>
<CAPTION>

<S>                                                          <C>
  ALLEN TELECOM INC.                                         KEYBANK NATIONAL ASSOCIATION,
                                                             individually as the Swing Line Lender,
  By:                                                        a  Lender, a Letter of Credit Issuer,
     -------------------------------                         and as the Syndication Agent and
  Name:                                                      the Administrative Agent
       -----------------------------
  Title:
        ----------------------------
                                                             By:
                                                                ------------------------------------
                                                                Lawrence A. Mack, Senior Vice President

  BANK ONE, MICHIGAN                                         FIRSTAR BANK, NATIONAL ASSOCIATION (formerly Star
     (formerly  NBD Bank),                                   Bank, National Association)
         individually as a Lender and
         as Documentation Agent                              By:
                                                                -------------------------------
                                                             Name:
                                                                  -----------------------------
  By:                                                        Title:
     -------------------------------                               ----------------------------
  Name
       -----------------------------
  Title:
        ----------------------------

  FIFTH THIRD BANK, NORTHEASTERN OHIO                        LaSALLE  BANK NATIONAL ASSOCIATION
                                                                (formerly LaSalle National Bank)
  By:
     -------------------------------
  Name:                                                      By:
       -----------------------------                            -------------------------------
  Title:                                                     Name:
        ------------------------------                            -----------------------------
                                                             Title
                                                                   ----------------------------
</TABLE>

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