Icom IC-M502 Instruction Manual

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Icom IC-M502 Instruction Manual Manual pdf 33 page image

297INTERCOM OPERATIONn Intercom operationThe optional intercom function allows you to talk to the deckfrom the cabin. The optional HM-127 REMOTE-CONTROL MI-CROPHONE is required for intercom operation.Connect an optional HM-127 as described on p. 35.• Transmitting is impossible during intercom operation.• The received signal is muted during intercom operation.q Push [LO/DX•IC•SCR] for 1 sec. to enter intercom mode.• The HM-127 power is automatically turned ON, even if the poweris OFF.w Push and hold [LO/DX•IC•SCR] again to call up.• The transceiver and microphone emit call beeps.e Push and hold the PTT switch and speak at a normal voicelevel into the microphone.• “TALK” or “LSTN” appears on the caller or listener function dis-play, respectively.• To adjust the IC-M502’s speaker output level, rotate [VOL].• To adjust the HM-127’s speaker output level, push [Y]/[Z] afterpushing [VOL].r After releasing the PTT switch you can hear the responsethrough the speaker.t To return to normal operation, push [LO/DX•IC•SCR] mo-mentarily.• Other switches also turn the function OFF, however, the corre-sponding function is then activated e.g. pushing [16•9] selectschannel 16.• While in the intercom mode, the transceiver functions(transmit and receive) are interrupted. If the transceiver isin transmit condition, the intercom function is not avail-able.• When a DSC call is received, “DSC received” appearsand the last received DSC message is displayed after theintercom use is finished.• When a WX alert is received, “WX ALT” flashes and abeep sounds. The WX alert sounds after the intercom useis finished.IntercomINT INTTALKIC-M502 (caller) HM-127 (listener)IntercomINT INTIC-M502 HM-127