March 4, 2005                                                         EXHIBIT 24

Mr. Joseph P. Macaluso Tel-Instrument Electronics Corp 728 Garden St.
Carlstadt, NJ 07072

Dear Mr. Macaluso:

I, Jeffrey C. O'Hara, hereby authorize and designate you, Joseph P. Macaluso, to
sign and file with the Securities and Exchange Commission, on my behalf and as
my attorney in fact, all reports on forms 4 and 5 with respect to my ownership
of securities of Tel-Instrument Electronics Corp. This authorization and
designation shall continue for three years unless sooner terminated in a writing
signed by me and filed with the Corporation and the Securities and Exchange
Commission.

Dated: March 24, 2005                            /s/ Jeffrey C. O'Hara
                                                 ---------------------
                                                 Jeffrey C. O'Hara
                                                 Director