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EXHIBIT 10.20

THIRD AMENDMENT TO LOAN AGREEMENT

THIS THIRD AMENDMENT TO LOAN AGREEMENT (this Amendment) is made and entered
into as of the 17th day of March, 2003, by and among LABARGE, INC., a Delaware
corporation (the  Company , LABARGE PROPERTIES, INC., a Missouri corporation
(LaBarge Properties), and U.S. BANK NATIONAL ASSOCIATION (Lender).

WITNESSETH:

WHEREAS, the Company, LaBarge Properties and Lender have heretofore entered into
that certain Loan Agreement dated as of March 12, 2002, as amended by that
certain First Amendment to Loan Agreement dated as of June 10, 2002, and that
certain Second Amendment to Loan Agreement dated as of October 25, 2002 (as so
amended, the Loan Agreement; all capitalized terms used and not otherwise
defined in this Amendment shall have the respective meanings ascribed to them in
the Loan Agreement as amended by this Amendment); and

WHEREAS, the Company, LaBarge Properties and Lender desire to amend the Loan
Agreement in the manner hereinafter set forth;

NOW, THEREFORE, in consideration of the premises and for other good and valuable
consideration, the receipt and sufficiency of which are hereby acknowledged,
Borrower and Lender hereby agree as follows:



|1.    |  | Section 5.01(o) of the Loan Agreement is hereby deleted in its entirety
and the following substituted in lieu thereof:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|----- |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|     
|(o)   |  | Financial Covenants.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|     
|(i)   |  | Minimum Consolidated Tangible Net Worth. The Company will all times
have a Consolidated Tangible Net Worth of not less than the sum of (A)
the sum of (1) the Companys Consolidated Tangible Net Worth as of
March 30, 2003, minus (2) $3,000,000.00 plus (B) Seventy-Five Percent
(75%) of Consolidated Net Income (with no deductions for losses) during
each fiscal quarter of the Company ending after March 30, 2003 (such
required increases to be cumulative for each such fiscal quarter) plus
(C) One Hundred Percent (100%) of the net proceeds received by the
Company on or after March 30, 2003, from the issuance of any capital
stock or other equity interests of the Company.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|     
|(ii)  |  | Maximum Consolidated Debt to Consolidated EBITDA Ratio. The Company
will have a Consolidated Debt to Consolidated EBITDA Ratio of not more
than 3.0 to 1.0 as of the last day of each fiscal quarter of the
Company commencing with the fiscal quarter of the Company ending March
30, 2003.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|     
|(iii) |  | Minimum Consolidated Interest Coverage. The Company will have a
Consolidated Interest Coverage Ratio of at least 3.0 to 1.0 for each
four (4) consecutive fiscal quarter period of the Company commencing
with the four (4) consecutive fiscal quarter period of the Company
ending March 30, 2003.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|     
|2.    |  | The Company and LaBarge Properties hereby jointly and severally agree
to reimburse Lender upon demand for all out-of-pocket costs and
expenses (including, without limitation, reasonable attorneys fees and
expenses) incurred by Lender in the preparation, negotiation and
execution of this Amendment and any and all other agreements,
documents, instruments and/or certificates relating to the amendment of
the existing credit facilities from Lender to the Company and/or
LaBarge Properties (collectively, the Loan Documents). The Company
and LaBarge Properties further jointly and severally agree to pay or
reimburse Lender for (a) any stamp or other taxes (excluding income or
gross receipts taxes) which may be payable with respect to the
execution, delivery, filing and/or recording of the Loan Documents and
(b) the cost of any filings and searches, including, without
limitation, Uniform Commercial Code filings and searches. All of the
obligations of the Company and LaBarge Properties under this paragraph
shall survive the payment of the Companys Obligations and the LaBarge
Properties Obligations and the termination of the Loan Agreement.
|     
|3.    |  | All references in the Loan Agreement to this Agreement and any other
references of similar import shall henceforth mean the Loan Agreement
as amended by this Amendment.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|     
|4.    |  | Except to the extent specifically amended by this Amendment, all of the
terms, provisions, conditions, covenants, representations and
warranties contained in the Loan Agreement shall be and remain in full
force and effect and the same are hereby ratified and confirmed.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|     
|5.    |  | This Amendment shall be binding upon and inure to the benefit of the
Company, LaBarge Properties and Lender and their respective successors
and assigns, except that neither the Company nor LaBarge Properties may
assign, transfer or delegate any of its rights or obligations under the
Loan Agreement as amended by this Amendment.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|     
|6.    |  | Each of the Company and LaBarge Properties hereby represents and
warrants to Lender that:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      





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|(a) |  | the execution, delivery and performance by the Company and LaBarge
Properties of this Amendment are within the corporate powers of each of
the Company and LaBarge Properties, have been duly authorized by all
necessary corporate action on the part of each of the Company and
LaBarge Properties and require no action by or in respect of, consent
of or filing or recording with, any governmental or regulatory body,
instrumentality, authority, agency or official or any other Person;                                                                                                                                                                                                                                                                                                                                                                                     
|--- |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|   
|(b) |  | the execution, delivery and performance by the Company and LaBarge
Properties of this Amendment do not conflict with, or result in a
breach of the terms, conditions or provisions of, or constitute a
default under or result in any violation of, the terms of the
Certificate or Articles of Incorporation or By-Laws of the Company
and/or LaBarge Properties, any applicable law, rule, regulation, order,
writ, judgment or decree of any court or governmental or regulatory
body, instrumentality authority, agency or official or any agreement,
document or instrument to which the Company and/or LaBarge Properties
is a party or by which the Company and/or LaBarge Properties or any
Property of the Company and/or LaBarge Properties is bound or to which
the Company and/or LaBarge Properties or any Property of the Company
and/or LaBarge Properties is subject;
|   
|(c) |  | this Amendment has been duly executed and delivered by each of the
Company and LaBarge Properties, constitutes the legal, valid and
binding obligation of each of the Company and LaBarge Properties and is
enforceable against each of the Company and LaBarge Properties in
accordance with its terms, except as such enforceability may be limited
by (i) applicable bankruptcy, insolvency or similar laws affecting the
enforcement of creditors rights generally and (ii) general principles
of equity (regardless of whether such enforceability is considered in a
proceeding in equity or at law);                                                                                                                                                                                                                                                                         
|   
|(d) |  | all of the representations and warranties made by the Company, LaBarge
Properties and/or any other Obligor in the Loan Agreement and/or in any
of the other Transaction Documents are true and correct in all material
respects on and as of the date of this Amendment as if made on and as
of the date of this Amendment; and                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|   
|(e) |  | as of the date of this Amendment and after giving effect to this
Amendment, no Default or Event of Default under or within the meaning
of the Loan Agreement has occurred and is continuing.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|   
|7.  |  | In the event of any inconsistency or conflict between this Amendment
and the Loan Agreement, the terms, provisions and conditions contained
in this Amendment shall govern and control.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|   
|8.  |  | This Amendment shall be governed by and construed in accordance with
the substantive laws of the State of Missouri (without reference to
conflict of law principles).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|   
|9.  |  | ORAL AGREEMENTS OR COMMITMENTS TO LOAN MONEY, EXTEND CREDIT OR TO
FORBEAR FROM ENFORCING REPAYMENT OF A DEBT, INCLUDING PROMISES TO
EXTEND OR RENEW SUCH DEBT, ARE NOT ENFORCEABLE. TO PROTECT THE COMPANY,
LABARGE PROPERTIES AND LENDER FROM MISUNDERSTANDING OR DISAPPOINTMENT,
ANY AGREEMENTS REACHED BY THE COMPANY, LABARGE PROPERTIES AND LENDER
COVERING SUCH MATTERS ARE CONTAINED IN THE LOAN AGREEMENT AS AMENDED BY
THIS AMENDMENT AND THE OTHER TRANSACTION DOCUMENTS, WHICH LOAN
AGREEMENT AS AMENDED BY THIS AMENDMENT AND OTHER TRANSACTION DOCUMENTS
ARE A COMPLETE AND EXCLUSIVE STATEMENT OF THE AGREEMENTS AMONG THE
COMPANY, LABARGE PROPERTIES AND LENDER, EXCEPT AS THE COMPANY, LABARGE
PROPERTIES AND LENDER MAY LATER AGREE IN WRITING TO MODIFY THEM.                                                                                                     
|   
|10. |  | Notwithstanding any provision contained in this Amendment to the
contrary, this Amendment shall not be effective unless and until Lender
shall have received:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|   
|(a) |  | this Amendment, duly executed by the Company and LaBarge Properties;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|   
|(b) |  | a copy of resolutions of the Board of Directors of the Company, duly
adopted, which authorize the execution, delivery and performance of
this Amendment;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|   
|(c) |  | a copy of resolutions of the Board of Directors of LaBarge Properties,
duly adopted, which authorize the execution, delivery and performance
of this Amendment;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|   
|(d) |  | an incumbency certificate, executed by the Secretary of the Company,
which shall identify by name and title and bear the signatures of all
of the officers of the Company executing this Amendment;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|   
|(e) |  | an incumbency certificate, executed by the Secretary of LaBarge
Properties, which shall identify by name and title and bear the
signatures of all of the officers of LaBarge Properties executing this
Amendment;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
|   
|(f) |  | certificates of corporate good standing of the Company issued by the
Secretaries of States of the States of Delaware and Missouri;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|   
|(g) |  | a certificate of corporate good standing of LaBarge Properties issued
by the Secretary of State of the State of Missouri;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|   
|(h) |  | a Consent of Guarantor in form and substance satisfactory to Lender,
duly executed by the Company; and                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|   
|(i) |  | a Consent of Guarantors in form and substance satisfactory to Lender,
duly executed by each Guarantor Subsidiary.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    

IN WITNESS WHEREOF, the Company, LaBarge Properties and Lender have executed
this Third Amendment to Loan Agreement as of the 17th day of March, 2003.

| |  |        |  |                               
| |  | ------ |  | ------------------------------
| |  |        |  | LABARGE, INC.                 
| |  |        |  |                               
| |  | By:    |  | /s/Donald H. Nonnenkamp       
| |  | Title: |  | Vice President & CFO          
| |  |        |  |                               
| |  |        |  | LABARGE PROPERTIES, INC.      
| |  |        |  |                               
| |  | By     |  | /s/Donald H. Nonnenkamp       
| |  | Title: |  | Vice President                
| |  |        |  |                               
| |  |        |  | U.S. BANK NATIONAL ASSOCIATION
| |  |        |  |                               
| |  | By:    |  | /s/Thomas S. Sherman          
| |  | Title: |  | Vice President                





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CONSENT OF GUARANTOR

The undersigned hereby consents to the terms, provisions and conditions
contained in that certain Third Amendment to Loan Agreement dated as of March
17, 2003, by and among LaBarge, Inc. (the Company, LaBarge Properties, Inc.
(LaBarge Properties and U.S. Bank National Association (Lender) (the Third
Amendment to Loan Agreement). The undersigned hereby acknowledges and agrees
that (a) the execution and delivery of the Third Amendment to Loan Agreement by
the Company and LaBarge Properties to Lender will not adversely affect or impair
any of its obligations to Lender under that certain Guaranty dated as of March
12, 2002, and executed by the undersigned in favor of Lender with respect to the
indebtedness of LaBarge Properties to Lender (the Guaranty), (b) payment of
all of the LaBarge Properties Obligations (as defined in that certain Loan
Agreement dated as of March 12, 2002, by and among the Company, LaBarge
Properties and Lender, as amended by that certain First Amendment to Loan
Agreement dated as of June 10, 2002, that certain Second Amendment to Loan
Agreement dated as of October 25, 2002, and the Third Amendment to Loan
Agreement and as the same may from time to time be further amended, modified,
extended, renewed or restated) is guaranteed to Lender by the undersigned
pursuant to the terms of the Guaranty and (c) the Guaranty is in full force and
effect on the date hereof and the same is hereby ratified and confirmed.

Executed as of the 17th day of March, 2003.

|                         |                            
|------------------------ | ---------------------------
|LABARGE, INC., Guarantor
|                         | By: /s/Donald H. Nonnenkamp
|                         | Title: Vice President & CFO

CONSENT OF GUARANTORS

Each of the undersigned hereby consents to the terms, provisions and
conditions contained in that certain Third Amendment to Loan Agreement dated as
of March 17, 2003, by and among LaBarge, Inc. (the  Company , LaBarge
Properties, Inc. ( LaBarge Properties and U.S. Bank National Association
(Lender) (the Third Amendment to Loan Agreement). Each of the undersigned
hereby acknowledges and agrees that (a) the execution and delivery of the Third
Amendment to Loan Agreement by the Company and LaBarge Properties to Lender will
not adversely affect or impair any of its obligations to Lender under that
certain Guaranty dated as of March 12, 2002, and executed by the undersigned in
favor of Lender with respect to the indebtedness of the Company to Lender (the
Guaranty), (b) payment of all of the Companys Obligations (as defined in
that certain Loan Agreement dated as of March 12, 2002, by and among the
Company, LaBarge Properties and Lender, as amended by that certain First
Amendment to Loan Agreement dated as of June 10, 2002, that certain Second
Amendment to Loan Agreement dated as of October 25, 2002, and the Third
Amendment to Loan Agreement and as the same may from time to time be further
amended, modified, extended, renewed or restated) is guaranteed to Lender by the
undersigned pursuant to the terms of the Guaranty and (c) the Guaranty is in
full force and effect on the date hereof and the same is hereby ratified and
confirmed.

Executed as of the 17th day of March, 2003.

|                                  |                             
|--------------------------------- | ----------------------------
|LABARGE WIRELESS, INC., Guarantor
|                                  |                             
|                                  | By: /s/ Donald H. Nonnenkamp
|                                  | Title: Vice President       
|                                  |                             
|LABARGE/STC, INC., Guarantor     
|                                  |                             
|                                  | By /s/ Donald H. Nonnenkamp 
|                                  | Title: Vice President       
|                                  |                             
|LABARGE  OCS, INC., Guarantor   
|                                  |                             
|                                  | By /s/ Donald H. Nonnenkamp 
|                                  | Title: Vice President