5213 HM-127 REMOTE-CONTROL MICROPHONE OPTION Panel descriptionThe optional HM-127 remotely controls the IC-M502A andprovides an optional Intercom function.DD Front and side keysq PTT SWITCH [[PTTPTT]] (pgs. 8, 57)Push and hold to transmit; release to receive.w CHANNEL UP/DOWN KEYS [[ YYYY]]/[[ ZZZZ]]➥ Push either key to change the operating channel, Setmode settings, etc. (pgs. 8, 57)➥ Push either key to adjust audio level or noise squelchlevel after [[ VOLVOL ]] or [[ SQLSQL ]] is pushed, respectively.(pgs. 8, 57)➥ Push either key to adjust the brightness of the LCD andkey backlight after [[VOLVOL]] is pushed for 1 sec. (p. 58)➥ In Set mode, changes setting of the selected item. (pgs.38, 62)➥ Checks tag channels or changes scanning direction dur-ing scan. (pgs. 13, 61)e CHANNEL 16/CALL CHANNEL KEY [[ ]] ((99))➥ Selects Channel 16 when pushed. (pgs. 6, 56)➥ Selects call channel when pushed for 1 sec. (pgs. 6, 56)• “CALL” appears when call channel is selected.➥ Push for 3 sec. to enter call channel programming con-dition when call channel is selected. (pgs. 9, 59)➥ While pushing [[ H/LH/L ]], enters channel comments pro-gramming condition. (pgs. 9, 63)➥ Enters Set mode when pushed while turning power ON.(pgs. 38, 62)1616Top keysqewytru