Document:

CONFIDENTIAL MEMO

TO:      Bob Therrien

FROM:    Jim Pelusi

DATE:    06/16/00

RE:      Response to you and board

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

The following points represent the agreement that you and I reached earlier this
week.

1.    I will make a commitment to continue my employment at Brooks for a minimum
      of one year.

2.    Brooks will provide a 6 month severance commitment, if I leave Brooks for
      any reason (including my voluntary decision to leave) after the one year
      period.

3.    All stock option grants would continue to vest during the severance
      period.

4.    Base compensation will be increased to $250,000 per year.

5.    Participation in bonus program at the 30% target level.

6.    If I leave Brooks for any reason a pro-rata bonus payment will be made for
      the portion of the bonus period I was employed by Brooks. The 6 month
      severance period will not be included in the pro-rata bonus calculation.

7.    Additional grant of 60,000 shares with an effective date of May 31st.

8.    Expenses billed directly to the company (similar to traditional Brooks
      executives).

Bob, I appreciate your willingness to work with me on these issues. As we
discussed, I am 100%+ on board and motivated to grow the Factory Automation
Software business for Brooks.

Jim Pelusi

                                            Approved: /s/ Robert J. Therrien
                                                      -------------------------
                                                      Robert J. Therrien

                                                      6/16/00<PAGE>   1
                                                                     Exhibit 4.0

                          AGREEMENT AND AMENDMENT NO. 1

     THIS AGREEMENT AND AMENDMENT NO. 1 (this "Agreement") is made as of
November 16, 2000, by and among ALPHA INDUSTRIES, INC., TRANS-TECH, INC., FLEET
NATIONAL BANK, as Agent and SILICON VALLEY BANK.

     WHEREAS, the parties hereto are parties to a certain Revolving Credit
Agreement, dated as of November 1, 1999 (the "Credit Agreement"). Terms defined
in the Credit Agreement are used herein with the same meanings;

     WHEREAS, the Borrowers have requested certain changes to the Credit
Agreement; and

     WHEREAS, subject to the terms and provisions hereof, the Banks are willing
to so amend the Credit Agreement;

     NOW, THEREFORE, in consideration of the premises and for other good and
valuable consideration, the receipt and adequacy of which are hereby
acknowledged, the parties hereto agree as follows:

     1.   AMENDMENTS TO SECTION 1.1. Section 1.1 of the Credit Agreement shall
be amended by deleting the date "October 31, 2000" from the third line thereof
and substituting in its stead the date "November 15, 2002".

     2.   AMENDMENT TO SECTION 7.3. Section 7.3 of the Credit Agreement is
hereby amended by deleting clause (e) and substituting in its stead a new clause
(e) to read in its entirety as follows:

          (e) the aggregate value in any fiscal year of (i) cash consideration
     paid by the Borrowers and their Subsidiaries in connection with such
     transactions does not exceed $25,000,000 and (ii) non-cash consideration
     paid by the Borrowers and their Subsidiaries in connection with such
     transactions does not exceed $100,000,000.

     3.   AMENDMENT TO SECTION 7.14. Section 7.14 of the Credit Agreement is
hereby amended by deleting the figure "$40,000,000" from the last line thereof
and substituting in its stead the figure "$80,000,000".

     4.   REPRESENTATIONS AND WARRANTIES. The Borrowers hereby represent and
warrant to the Agent and the Banks as follows:

          (a)  REPRESENTATIONS AND WARRANTIES IN CREDIT AGREEMENT. Except as
specified in writing by the Borrowers to the Agent with respect to the subject
matter of this Amendment by the Banks and the Borrowers, the representations and
warranties of the Borrowers contained in the Credit Agreement were true and
correct in all material respects when made and continued to be true and correct
in all material respects on the date hereof, except to the extent that such
representations and warranties relate expressly to an earlier date.

                                      -1-
<PAGE>   2

          (b)  AUTHORITY, NO CONFLICTS, ENFORCEABILITY OF OBLIGATIONS, ETC. The
Borrowers hereby confirm that the representations and warranties of the
Borrowers contained in Sections 4.1 and 4.3 of the Credit Agreement are true and
correct on and as of the date hereof as if made on the date hereof, treating
this Amendment, the Credit Agreement as amended hereby, and the other Loan
Documents as amended hereby, as "Loan Documents" for the purposes of making said
representations and warranties.

     5.   CONDITIONS TO EFFECTIVENESS. The effectiveness of this Amendment shall
be subject to the delivery to the Agent by the Borrowers, contemporaneously with
the execution hereof, of the following, in form and substance satisfactory to
the Agent:

          (a)  this Amendment signed by each of the Borrowers and the Banks;

          (b)  an amended and restated Promissory Note in the form enclosed
herewith, duly executed by the Borrowers to the order of Fleet National Bank;

          (c)  an amended and restated Promissory Note in the form enclosed
herewith, duly executed by the Borrowers to the order of Silicon Valley Bank;
and

          (d)  any other confirmatory or corporate authority document or
instrument the Agent may reasonably request.

     6.   MISCELLANEOUS PROVISIONS. Except as otherwise expressly provided by
this Amendment, all of the terms, conditions and provisions of the Credit
Agreement and the other Loan Documents shall remain in full force and effect.
The Borrowers confirm and agree that the Obligations of the Borrowers to the
Banks, as amended and supplemented hereby, are entitled to the benefits of the
Loan Documents. The parties hereto hereby acknowledge and agree that all
references to the Credit Agreement and the Obligations thereunder contained in
any of the Loan Documents shall be references to the Credit Agreement and the
Obligations as amended hereby and as the same may be amended, modified,
supplemented, or restated from time to time. This Amendment may be executed in
any number of counterparts, but all such counterparts shall together constitute
but one instrument. In making proof of this Amendment it shall not be necessary
to produce or account for more than one counterpart signed by each party hereto
by and against which enforcement hereof is sought. The Borrowers hereby confirm
their obligations to pay promptly upon request all reasonable out-of-pocket
costs and expenses incurred or sustained by the Agent in connection with this
Amendment, including the reasonable fees and expenses of Sullivan & Worcester
LLP.

     7.   GOVERNING LAW. This Amendment shall be construed according to and
governed by the internal laws of The Commonwealth of Massachusetts without
reference to principles of conflicts of law.

                                      -2-
<PAGE>   3

     IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be
executed by their respective officers thereunto duly authorized.

Executed as a sealed instrument as of the date first set forth above.

                                        ALPHA INDUSTRIES, INC.

                                        By: /s/ Paul E. Vincent
                                            ------------------------------------
                                            Name:  Paul E. Vincent
                                            Title: Chief Financial Officer

                                        TRANS-TECH, INC.

                                        By: /s/ Paul E. Vincent
                                            ------------------------------------
                                            Name:  Paul E. Vincent
                                            Title: Chief Financial Officer

                                        FLEET NATIONAL BANK, in its capacity as
                                        a Bank and as Agent hereunder

                                        By: /s/ Irina V. Case
                                            ------------------------------------
                                            Name: Irina V. Case
                                            Title: Vice President

                                        SILICON VALLEY EAST, a Division of
                                        Silicon Valley Bank, in its capacity as
                                        a Bank

                                        By: /s/ J. Frank Tower
                                            ------------------------------------
                                            Name:  J. Frank Tower
                                            Title: Vice President

                                        SILICON VALLEY BANK, in its capacity as
                                        a Bank

                                        By: /s/ Maggie Garcia
                                            ------------------------------------
                                            Name: Maggie Garcia
                                            Title: Loan Administrative Team
                                                   Leader
                                            (Signed at Santa Clara, California)

                                      -3-
<PAGE>   4

                      AMENDED AND RESTATED PROMISSORY NOTE
                        (Revolving Line of Credit Loans)

$7,500,000                                   Woburn, Massachusetts
                                             Dated as of November 16, 2000

     For value received, the undersigned, ALPHA INDUSTRIES, INC., a Delaware
corporation, and TRANS-TECH, INC., a Maryland corporation (each a "BORROWER" and
collectively the "BORROWERS"), jointly and severally promise to pay to FLEET
NATIONAL BANK (the "BANK") at the office of the Bank located at 100 Federal
Street, Boston, Massachusetts 02110, or to its order, the lesser of SEVEN
MILLION FIVE HUNDRED THOUSAND DOLLARS ($7,500,000) or the outstanding principal
amount hereunder, on November 15, 2002 (the "MATURITY DATE"), together with
interest on the principal amount hereof from time to time payable at the times
and outstanding at the rate set forth in the Credit Agreement referred to below.

     Computations of interest shall be made by the Bank on the basis of a year
of 360 days for the actual number of days occurring in the period for which such
interest is payable.

     This promissory note amends and restates the terms and conditions of the
obligations of the Borrowers under the domestic revolving line promissory note
dated November 1, 1999 (the "ORIGINAL NOTE") by the Borrowers to the Bank.
Nothing contained in this promissory note shall be deemed to create or represent
the issuance of new indebtedness or the exchange by the Borrowers of the
Original Note for a new promissory note. This promissory note is one of the
Revolving Line of Credit Notes referred to in the Section 1.3(i) of that certain
Revolving Credit Agreement dated November 1, 1999, as amended by Agreement and
Amendment No. 1 dated November 16, 2000, by and among Silicon Valley Bank, the
Bank, as Agent and a bank and the Borrowers together with all related schedules,
as the same may be further amended, modified or supplemented from time to time
(the "CREDIT AGREEMENT"), and is subject to optional and mandatory prepayment as
provided therein, and is entitled to the benefits thereof and of the other Loan
Documents referred to therein.

     Each reference in each Loan Document (as defined in the Credit Agreement)
to "Revolving Line of Credit Note", "thereof", "therein", "thereunder", or words
of like import referring to the Original Note, shall mean and be a reference to
the Original Note, as amended and restated hereby.

     Upon the occurrence of any Event of Default under, and as defined in, the
Credit Agreement, at the option of the Bank, the principal amount then
outstanding of and the accrued interest on the advances under this note and all
other amounts payable under this note shall become immediately due and payable,
without notice (including, without limitation, notice of intent to accelerate),
presentment, demand, protest or other formalities of any kind, all of which are
hereby expressly waived by the Borrowers.

     The Bank shall keep a record of the amount and the date of the making of
each advance pursuant to the Credit Agreement and each payment of principal with
respect thereto by maintaining a computerized record of such information and
printouts of such computerized record, which computerized record, and the
printouts thereof, shall constitute PRIMA FACIE evidence of the accuracy of the
information so endorsed.

     If the entire amount of any required payment of principal and/or interest
is not paid within ten (10) Business Days after the same is due, the Borrowers
shall pay to the Bank a late fee equal to five percent (5%) of the required
payment.

     Each of the undersigned agrees to pay all reasonable costs and expenses of
the Agent or the Bank (including, without limitation, the reasonable fees and
expenses of attorneys) in connection with the enforcement of this note and the
other Loan Documents and the preservation of its rights hereunder and
thereunder.

     No delay or omission on the part of the Agent or the Bank in exercising any
right hereunder shall operate as a waiver of such right or of any other right of
the Bank, nor shall any delay, omission or waiver on any one occasion

<PAGE>   5

be deemed a bar to or waiver of the same or any other right on any future
occasion. The Borrowers and every endorser or guarantor of this note regardless
of the time, order or place of signing waives presentment, demand, protest and
notices of every kind and assents to any one or more extensions or postponements
of the time of payment or any other indulgences, to any substitutions, exchanges
or releases of collateral for this note, and to the additions or releases of any
other parties or persons primarily or secondarily liable.

     The Bank may at any time pledge all or any portion of its rights under the
Loan Documents including any portion of this promissory note to any of the
twelve (12) Federal Reserve Banks organized under Section 4 of the Federal
Reserve Act, 12 U.S.C. Section 341. No such pledge or enforcement thereof shall
release the Bank from its obligations under any of the Loan Documents.

     THE BORROWERS HEREBY EXPRESSLY WAIVE ANY RIGHT THEY MAY NOW OR HEREAFTER
HAVE TO A JURY TRIAL IN ANY SUIT, ACTION OR PROCEEDING WHICH ARISES OUT OF OR BY
REASON OF THIS NOTE, ANY LOAN DOCUMENT (AS DEFINED IN THE CREDIT AGREEMENT), OR
THE TRANSACTIONS CONTEMPLATED HEREBY.

     BY ITS EXECUTION AND DELIVERY OF THIS NOTE, EACH BORROWER ACCEPTS FOR
ITSELF AND IN CONNECTION WITH ITS PROPERTIES, GENERALLY AND UNCONDITIONALLY, THE
NON-EXCLUSIVE JURISDICTION OF ANY STATE OR FEDERAL COURT OF COMPETENT
JURISDICTION IN THE COMMONWEALTH OF MASSACHUSETTS IN ANY ACTION, SUIT OR
PROCEEDING OF ANY KIND AGAINST IT WHICH ARISES OUT OF OR BY REASON OF THIS NOTE,
ANY LOAN DOCUMENT (AS DEFINED IN THE CREDIT AGREEMENT), OR THE TRANSACTIONS
CONTEMPLATED HEREBY, IN ADDITION TO ANY OTHER COURT IN WHICH SUCH ACTION, SUIT
OR PROCEEDING MAY BE BROUGHT, IRREVOCABLY AGREES TO BE BOUND BY ANY FINAL
JUDGMENT RENDERED BY ANY SUCH COURT IN ANY SUCH ACTION, SUIT OR PROCEEDING IN
WHICH IT SHALL HAVE BEEN SERVED WITH PROCESS IN THE MANNER HEREINAFTER PROVIDED,
SUBJECT TO EXERCISE AND EXHAUSTION OF ALL RIGHTS OF APPEAL AND TO THE EXTENT
THAT IT MAY LAWFULLY DO SO, WAIVES AND AGREES NOT TO ASSERT, BY WAY OF MOTION,
AS A DEFENSE OR OTHERWISE, IN SUCH ACTION, SUIT OR PROCEEDING ANY CLAIMS THAT IT
IS NOT PERSONALLY SUBJECT TO THE JURISDICTION OF SUCH COURT, THAT ITS PROPERTY
IS EXEMPT OR IMMUNE FROM ATTACHMENT OR EXECUTION, THAT THE ACTION, SUIT OR
PROCEEDING IS BROUGHT IN AN INCONVENIENT FORUM OR THAT THE VENUE THEREOF IS
IMPROPER, AND AGREES THAT PROCESS MAY BE SERVED UPON IT IN ANY SUCH ACTION, SUIT
OR PROCEEDING IN THE MANNER PROVIDED BY CHAPTER 223A OF THE GENERAL LAWS OF
MASSACHUSETTS, RULE 4 OF THE MASSACHUSETTS RULES OF CIVIL PROCEDURE OR RULE 4 OF
THE FEDERAL RULES OF CIVIL PROCEDURE.

                            (remainder of page blank)

                                      -2-
<PAGE>   6

     ALL RIGHTS AND OBLIGATIONS HEREUNDER SHALL BE GOVERNED BY THE LAW OF THE
COMMONWEALTH OF MASSACHUSETTS AND THIS NOTE SHALL BE DEEMED TO BE UNDER SEAL.

Attest:                                      ALPHA INDUSTRIES, INC.

                                             By: /s/ Paul E. Vincent
--------------------                             -------------------------------
Name:                                            Name: Paul E. Vincent
Title:                                           Title: Chief Financial Officer

[Seal]

Attest:                                      TRANS-TECH, INC.

                                             By: /s/ Paul E. Vincent
--------------------                             -------------------------------
Name:                                            Name: Paul E. Vincent
Title:                                           Title: Chief Financial Officer

[Seal]

:11/7/97

                                      -3-
<PAGE>   7

                      AMENDED AND RESTATED PROMISSORY NOTE
                        (Revolving Line of Credit Loans)

$2,500,000                                   Woburn, Massachusetts
                                             Dated as of November 16, 2000

     For value received, the undersigned, ALPHA INDUSTRIES, INC., a Delaware
corporation, and TRANS-TECH, INC., a Maryland corporation (each a "BORROWER" and
collectively the "BORROWERS"), jointly and severally promise to pay to SILICON
VALLEY BANK (the "BANK") at the office of the Bank located at 3003 Tasman Drive,
Santa Clara, California 95054, or to its order, the lesser of TWO MILLION FIVE
HUNDRED THOUSAND DOLLARS ($2,500,000) or the outstanding principal amount
hereunder, on November 15, 2002 (the "MATURITY DATE"), together with interest on
the principal amount hereof from time to time outstanding payable at the times
and at the rate set forth in the Credit Agreement referred to below.

     Computations of interest shall be made by the Bank on the basis of a year
of 360 days for the actual number of days occurring in the period for which such
interest is payable.

     This promissory note amends and restates the terms and conditions of the
obligations of the Borrowers under the domestic revolving line promissory note
dated November 1, 1999 (the "ORIGINAL NOTE") by the Borrowers to the Bank.
Nothing contained in this promissory note shall be deemed to create or represent
the issuance of new indebtedness or the exchange by the Borrowers of the
Original Note for a new promissory note. This promissory note is one of the
Revolving Line of Credit Notes referred to in the Section 1.3(i) of that certain
Revolving Credit Agreement dated November 1, 1999, as amended by Agreement and
Amendment No. 1 dated November 16, 2000, by and among the Bank, Fleet National
Bank as Agent and a bank and the Borrowers together with all related schedules,
as the same may be further amended, modified or supplemented from time to time
(the "CREDIT AGREEMENT"), and is subject to optional and mandatory prepayment as
provided therein, and is entitled to the benefits thereof and of the other Loan
Documents referred to therein.

     Each reference in each Loan Document (as defined in the Credit Agreement)
to "Revolving Line of Credit Note", "thereof", "therein", "thereunder", or words
of like import referring to the Original Note, shall mean and be a reference to
the Original Note, as amended and restated hereby.

     Upon the occurrence of any Event of Default under, and as defined in, the
Credit Agreement, at the option of the Bank, the principal amount then
outstanding of and the accrued interest on the advances under this note and all
other amounts payable under this note shall become immediately due and payable,
without notice (including, without limitation, notice of intent to accelerate),
presentment, demand, protest or other formalities of any kind, all of which are
hereby expressly waived by the Borrowers.

     The Bank shall keep a record of the amount and the date of the making of
each advance pursuant to the Credit Agreement and each payment of principal with
respect thereto by maintaining a computerized record of such information and
printouts of such computerized record, which computerized record, and the
printouts thereof, shall constitute PRIMA FACIE evidence of the accuracy of the
information so endorsed.

     If the entire amount of any required payment of principal and/or interest
is not paid within ten (10) Business Days after the same is due, the Borrowers
shall pay to the Bank a late fee equal to five percent (5%) of the required
payment.

     Each of the undersigned agrees to pay all reasonable costs and expenses of
the Agent and the Bank (including, without limitation, the reasonable fees and
expenses of attorneys) in connection with the enforcement of this note and the
other Loan Documents and the preservation of its rights hereunder and
thereunder.

<PAGE>   8

     No delay or omission on the part of the Agent or the Bank in exercising any
right hereunder shall operate as a waiver of such right or of any other right of
the Agent or the Bank, nor shall any delay, omission or waiver on any one
occasion be deemed a bar to or waiver of the same or any other right on any
future occasion. The Borrowers and every endorser or guarantor of this note
regardless of the time, order or place of signing waives presentment, demand,
protest and notices of every kind and assents to any one or more extensions or
postponements of the time of payment or any other indulgences, to any
substitutions, exchanges or releases of collateral for this note, and to the
additions or releases of any other parties or persons primarily or secondarily
liable.

     The Bank may at any time pledge all or any portion of its rights under the
Loan Documents including any portion of this promissory note to any of the
twelve (12) Federal Reserve Banks organized under Section 4 of the Federal
Reserve Act, 12 U.S.C. Section 341. No such pledge or enforcement thereof shall
release the Bank from its obligations under any of the Loan Documents.

     THIS NOTE HAS BEEN DELIVERED TO THE BANK AND ACCEPTED BY THE BANK IN THE
STATE OF CALIFORNIA.

     THE BORROWERS HEREBY EXPRESSLY WAIVE ANY RIGHT THEY MAY NOW OR HEREAFTER
HAVE TO A JURY TRIAL IN ANY SUIT, ACTION OR PROCEEDING WHICH ARISES OUT OF OR BY
REASON OF THIS NOTE, ANY LOAN DOCUMENT (AS DEFINED IN THE CREDIT AGREEMENT), OR
THE TRANSACTIONS CONTEMPLATED HEREBY.

     BY ITS EXECUTION AND DELIVERY OF THIS NOTE, EACH BORROWER ACCEPTS FOR
ITSELF AND IN CONNECTION WITH ITS PROPERTIES, GENERALLY AND UNCONDITIONALLY, THE
NON-EXCLUSIVE JURISDICTION OF ANY STATE OR FEDERAL COURT OF COMPETENT
JURISDICTION IN THE COMMONWEALTH OF MASSACHUSETTS (OR IF FOR ANY REASON ACCESS
TO SUCH COURTS IS DENIED TO THE BANK, THEN, IN THE STATE OF CALIFORNIA) IN ANY
ACTION, SUIT OR PROCEEDING OF ANY KIND AGAINST IT WHICH ARISES OUT OF OR BY
REASON OF THIS NOTE, ANY LOAN DOCUMENT (AS DEFINED IN THE CREDIT AGREEMENT), OR
THE TRANSACTIONS CONTEMPLATED HEREBY, IN ADDITION TO ANY OTHER COURT IN WHICH
SUCH ACTION, SUIT OR PROCEEDING MAY BE BROUGHT, IRREVOCABLY AGREES TO BE BOUND
BY ANY FINAL JUDGMENT RENDERED BY ANY SUCH COURT IN ANY SUCH ACTION, SUIT OR
PROCEEDING IN WHICH IT SHALL HAVE BEEN SERVED WITH PROCESS IN THE MANNER
HEREINAFTER PROVIDED, SUBJECT TO EXERCISE AND EXHAUSTION OF ALL RIGHTS OF APPEAL
AND TO THE EXTENT THAT IT MAY LAWFULLY DO SO, WAIVES AND AGREES NOT TO ASSERT,
BY WAY OF MOTION, AS A DEFENSE OR OTHERWISE, IN SUCH ACTION, SUIT OR PROCEEDING
ANY CLAIMS THAT IT IS NOT PERSONALLY SUBJECT TO THE JURISDICTION OF SUCH COURT,
THAT ITS PROPERTY IS EXEMPT OR IMMUNE FROM ATTACHMENT OR EXECUTION, THAT THE
ACTION, SUIT OR PROCEEDING IS BROUGHT IN AN INCONVENIENT FORUM OR THAT THE VENUE
THEREOF IS IMPROPER, AND AGREES THAT PROCESS MAY BE SERVED UPON IT IN ANY SUCH
ACTION, SUIT OR PROCEEDING IN THE MANNER PROVIDED BY CHAPTER 223A OF THE GENERAL
LAWS OF MASSACHUSETTS, RULE 4 OF THE MASSACHUSETTS RULES OF CIVIL PROCEDURE OR
RULE 4 OF THE FEDERAL RULES OF CIVIL PROCEDURE.

                            (remainder of page blank)

                                      -2-
<PAGE>   9

     ALL RIGHTS AND OBLIGATIONS HEREUNDER SHALL BE GOVERNED BY THE LAW OF THE
COMMONWEALTH OF MASSACHUSETTS AND THIS NOTE SHALL BE DEEMED TO BE UNDER SEAL.

Attest:                                      ALPHA INDUSTRIES, INC.

                                             By: /s/ Paul E. Vincent
--------------------                             -------------------------------
Name:                                            Name: Paul E. Vincent
Title:                                           Title: Chief Financial Officer

[Seal]

Attest:                                      TRANS-TECH, INC.

                                             By: /s/ Paul E. Vincent
--------------------                             -------------------------------
Name:                                            Name: Paul E. Vincent
Title:                                           Title: Chief Financial Officer

[Seal]

:11/7/97

                                       -3-
<PAGE>   10

                                     CONSENT

     The undersigned, as party to that certain Guarantee, dated as of November
1, 1999 (the "GUARANTEE"), by the undersigned in favor of Silicon Valley Bank
("SVB") and Fleet National Bank ("FLEET", together with SVB, the "BANKS" and
each a "BANK") and Fleet as agent for the Banks (together with its successors in
such capacity, the "AGENT"), delivered pursuant to that certain Revolving Credit
Agreement, dated as of November 1, 1999, by and among Alpha Industries, Inc.,
Trans-Tech, Inc., the Banks and the Agent (the "AGREEMENT") hereby consents to
the Agreement and Amendment No. 1, dated as of November 16, 2000 (the
"AMENDMENT") and hereby confirms and agrees that the Guarantee is, and shall
continue to be, in full force and effect and is hereby ratified and confirmed in
all respects, except that, upon the effectiveness of, and on and after the date
of, said Amendment, each reference in the Guarantee to "the Credit Agreement,"
"thereunder," "thereof," "therein," or words of like import referring to the
Agreement, shall mean and be a reference to the Agreement, as amended by the
Amendment.

                                        ALPHA SECURITIES CORP.

                                        By: /s/ Paul E. Vincent
                                            ------------------------------------
                                            Name:  Paul E. Vincent
                                            Title: Chief Financial Officer

Dated:  November 16, 2000

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