Frequency Electronics (FEIM) 8-K Frequency Electronics, Inc. Announces appointment of Chief Operating Officer

Exhibit 17.1

VIA EMAIL and Overnight Delivery

Frequency Electronics, Inc.

55 Charles Lindbergh Blvd.

Mitchel Field, NY 11553

Attention: Markus Hechler Corporate Secretary

September 12, 2017

For the reasons discussed at the Board meeting, including the issues outlined in my earlier letter to the Board today, I hereby resign from my position as director of Frequency Electronics, Inc. and from all committees and subcommittees thereof on which I serve, effective immediately. Please forward to me at your earliest convenience the draft minutes from the September 12, 2017 Board meeting for my review and comment.

Regretfully sincere,

Ryan Levenson

PRIVET FUND MANAGEMENT LLC•79 WEST PACES FERRY ROAD•ATLANTA, GA•30305