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ICOM-IC7400-IC746-IC746PRO-IC756PRO-IC7700-IC7800 (see HM-36 below ) PIN1 MIC + DC VOLTS FOR ICOM ONLY MICROPHONE
PIN2 + 8VOLTS 10Ma TO AVOID DAMAGING THE REGULATOR DO NOTSHORT TO GROUND
PIN7 MIC SCREEN/EARTH
PIN8 AUDIO OUT
Shield ----- audio grnd
Blk ----------PTT Grnd
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