NON-STANDARD COMS DURING NO-GYRO APCH.

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MY IFR FLT PLAN CONSISTED OF 1 ILS APCH AT MHT AND A RETURN TO ASH FOR AN ILS RWY 14 FULL STOP. I DEPARTED ASH WITH EVERYTHING WORKING FOR A LOW IFR TRAINING LESSON. AFTER COMPLETING ON ILS RWY 35 MHT TO A FULL STOP. I DEPARTED FOR NASHUA. AFTER TKOF; APPROX 1500 FT MSL; ATC ADVISED THEY HAD BEEN TRYING TO CONTACT ME. THIS IS WHEN I REALIZED THAT WHEN I TRIED TO IDENT THE ILS AT ASH; IT CUT OUT MY COMS WITH APCH. A FEW MOMENTS LATER; I NOTED MY COMPASS WAS GIVING ME ERRONEOUS INDICATIONS AND I WAS UNABLE TO SET MY HDG INDICATOR. I INFORMED ATC OF MY SIT AND THEY OFFERED ME A NO GYRO APCH; WHICH I ACCEPTED. I WAS FAMILIAR WITH THE PROCS; SUCH AS; 1/2 STANDARD RATE TURNS WHEN ON THE APCH AND STANDARD RATE TURNS OTHERWISE; BUT I WAS NOT SURE IF I SHOULD READ BACK THE TURN INSTRUCTIONS. WITH SAFETY IN MIND I ELECTED TO READ BACK INSTRUCTIONS. ATC MADE NO INDICATION THAT I WAS PERFORMING INACCURATELY SO I CONTINUED. AFTER THE FLT WAS OVER I CONSULTED MANY INSTRUCTORS ON THE SUBJECT AND FOUND I SHOULD HAVE SIMPLY COMPLIED WITH ATC INSTRUCTIONS WITH NO COM. IN THE FUTURE; I SUGGEST ATC INFORM A PLT IF HE IS COMMUNICATING INACCURATELY.