Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We have issued our report dated July 16, 2026 with respect to the consolidated financial statements of Frequency Electronics, Inc. included in the Annual Report on Form 10-K for the year ended April 30, 2026, which are incorporated by reference in this Registration Statement. We consent to the incorporation by reference of the aforementioned report in this Registration Statement, and to the use of our name as it appears under the caption “Experts.”

/s/ GRANT THORNTON LLP

Melville, New York

July 17, 2026