Exhibit 32.1

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, Carl F. Fahrenkrug, Chief Executive Officer of Microwave Filter Company,
Inc. (the Company), certify, pursuant to Section 906 of the Sarbanes-Oxley Act
of 2002, 18 U.S.C. Section 1350, that:

(1) the quarterly Report on Form 10-Q of the Company for the period ended June
    30, 2005 (the Report) fully complies with the requirements of Section
    13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m or
    78o(d); and

(2) the information contained in the report fairly presents, in all material
    respects, the financial condition and results of operations of the
    Company.

Dated: August 12, 2005                      /s/ Carl F. Fahrenkrug
                                                Carl F. Fahrenkrug
                                                Chief Executive Officer


                                                                   Exhibit 32.2

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, Richard L. Jones, Chief Financial Officer of Microwave Filter Company, Inc.
(the Company), certify, pursuant to Section 906 of the Sarbanes-Oxley Act of
2002, 18 U.S.C. Section 1350, that:

(1) the quarterly Report on Form 10-Q of the Company for the period ended June
    30, 2005 (the Report) fully complies with the requirements of Section
    13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m or
    78o(d); and

(2) the information contained in the report fairly presents, in all material
    respects, the financial condition and results of operations of the
    Company.

Dated: August 12, 2005                      /s/ Richard L. Jones
                                                Richard L. Jones
                                                Chief Financial Officer