50
OTHER FUNCTIONS
7
■ Intercom operation
The optional Intercom function allows you to talk to the deck
from the cabin. The optional command microphone is re-
quired for Intercom operation.
Connect an optional command microphone as described on
p. 63.
•TransmittingisimpossibleduringIntercomoperation.
•ThereceivedsignalismutedduringIntercomoperation.
q Push and hold [LO/DX•IC•SCRM] for 1 sec. to enter In-
tercom mode.
•Theoptionalcommandmicrophonepower is automatically
turned ON, even if the power is OFF.
w Push and hold [LO/DX•IC•SCRM] for 1 sec. again to call
up the optional command microphone side.
•Thetransceiverandtheoptionalcommandmicrophoneemit
call beeps.
e Push and hold [PTT] and speak at a normal voice level
into the microphone.
•“TALK” or “LISTEN”* appears on the caller or listener func-
tion display.
* “ ” or “ ” appears on the HM-157.
•ToadjusttheIC-M504’sspeakeroutputlevel,rotate[VOL].
•ToadjusttheHM-162’sspeakeroutputlevel,rotate[SELEC-
TOR] after pushing [VOL] on the HM-162.
•ToadjusttheHM-157’sspeakeroutputlevel,push[Y] or [Z]
after pushing [VOL•
DIM
PA/RX ] on the HM-157.
r After releasing [PTT] you can hear the response through
the speaker.
t
To return to the normal operation, push [LO/DX•IC•SCRM]
momentarily.
•[16•9] key is also available.
INTERCOM
IC-M504/HM-162 HM-157
Push and hold for 1 sec.
INTERCOM
TALK
IC-M504 (caller)
HM-157 (listener)
INTERCOM
LISTEN
HM-162 (listener)
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