Exhibit 31.1

CERTIFICATION


 I, Carl F. Fahrenkrug, Chief Executive Officer of Microwave Filter Company,
Inc. certify that:

1. I have reviewed this Form 10-K of Microwave Filter Company, Inc.;

2. Based on my knowledge, this annual report does not contain any untrue
   statement of a material fact or omit to state a material fact necessary to
   make the statements made, in light of the circumstances under which such
   statements were made, not misleading with respect to the period covered by
   this annual report;

3. Based on my knowledge, the financial statements, and other financial
   information included in this annual report, fairly present in all material
   respects the financial condition, results of operations and cash flows of
   the registrant as of, and for, the periods presented in this annual report;

4. The registrant's other certifying officer(s) and I are responsible for
   establishing and maintaining disclosure controls and procedures (as defined
   in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the registrant and we
   have:

   a) designed such disclosure controls and procedures, or caused such
      disclosure controls and procedures to be designed under our supervision,
      to ensure that material information relating to the registrant,
      including its consolidated subsidiaries, is made known to us by others
      within those entities, particularly during the period in which this
      annual report is being prepared;

   b) evaluated the effectiveness of the registrant's disclosure controls and
      procedures and presented in this report our conclusions about the
      effectiveness of the disclosure controls and procedures, as of the end
      of the period covered by this report based on such evaluation; and

   c) disclosed in this annual report any change in the registrant's internal
      control over financial reporting that occurred during the registrant's
      most recent fiscal quarter (the registrant's fourth fiscal quarter in
      the case of an annual report) that has materially affected, or is
      reasonably likely to materially affect, the registrant's internal
      control over financial reporting; and

5. The registrant's other certifying officer(s) and I have disclosed, based on
   our most recent evaluation of internal control over financial reporting, to
   the registrant's auditors and the audit committee of the registrant's board
   of directors (or persons performing the equivalent functions):

   a) All significant deficiencies and material weaknesses in the design or
      operation of internal control over financial reporting which are
      reasonably likely to adversely affect the registrant's ability to
      record, process, summarize and report financial information; and

   b) Any fraud, whether or not material, that involves management or other
      employees who have a significant role in the Company's internal control
      over financial reporting.




Date:  December 17, 2004                          /s/ Carl F. Fahrenkrug

                                                      Carl F. Fahrenkrug

<page>
                                                                   Exhibit 31.2
CERTIFICATION

I, Richard L. Jones, Chief Financial Officer of Microwave Filter Company, Inc.
      certify that:

1. I have reviewed this Form 10-K of Microwave Filter Company, Inc.;

2. Based on my knowledge, this annual report does not contain any untrue
   statement of a material fact or omit to state a material fact necessary to
   make the statements made, in light of the circumstances under which such
   statements were made, not misleading with respect to the period covered by
   this annual report;

3. Based on my knowledge, the financial statements, and other financial
   information included in this annual report, fairly present in all material
   respects the financial condition, results of operations and cash flows of
   the registrant as of, and for, the periods presented in this annual report;

4. The registrant's other certifying officer(s) and I are responsible for
   establishing and maintaining disclosure controls and procedures (as defined
   in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the registrant and we
   have:

   a) designed such disclosure controls and procedures, or caused such
      disclosure controls and procedures to be designed under our supervision,
      to ensure that material information relating to the registrant,
      including its consolidated subsidiaries, is made known to us by others
      within those entities, particularly during the period in which this
      annual report is being prepared;

   b) evaluated the effectiveness of the registrant's disclosure controls and
      procedures and presented in this report our conclusions about the
      effectiveness of the disclosure controls and procedures, as of the end
      of the period covered by this report based on such evaluation; and

   c) disclosed in this annual report any change in the registrant's internal
      control over financial reporting that occurred during the registrant's
      most recent fiscal quarter (the registrant's fourth fiscal quarter in
      the case of an annual report) that has materially affected, or is
      reasonably likely to materially affect, the registrant's internal
      control over financial reporting; and

5. The registrant's other certifying officer(s) and I have disclosed, based on
   our most recent evaluation of internal control over financial reporting, to
   the registrant's auditors and the audit committee of the registrant's board
   of directors (or persons performing the equivalent functions):

   a) All significant deficiencies and material weaknesses in the design or
      operation of internal control over financial reporting which are
      reasonably likely to adversely affect the registrant's ability to
      record, process, summarize and report financial information; and

   b) Any fraud, whether or not material, that involves management or other
      employees who have a significant role in the Company's internal control
      over financial reporting.




Date:  December 17, 2004                          /s/ Richard L. Jones

                                                      Richard L. Jones