What was found
DURING CLIMB-OUT, LOST ALL RADIOS, BOTH TRANSMIT AND RECIEVE FOR ABOUT 2 MIN, THEN THEY CAME BACK ON, THEN WENT OUT AGAIN. REPEATED THIS CYCLE ABOUT 4 TIMES. RETURNED TO MCO. ALL RADIOS OPERATE NORMAL AT GATE. CAPT SUSPECT CAPT HANDMIC. REPLACED SAME. REPLACED NR 1 VHF TRANCEIVER AND NR 2 AUDIO SELECT PANEL AS PRECAUTION. ALL RADIOS CK OK. PART NR HAND MIC- 63999-004 SERIAL NR 9206, TRANSCIEVER 064-1005-02 SERIAL NR 3960, AUDIO SEL PNL G6560 SERIAL NR 34.