29
7
INTERCOM OPERATION (IC-M402A only)
6
7
■ Intercom operation
The optional Intercom function allows you to talk to the deck
from the cabin. The optional HM-127
REMOTE
-
CONTROL
MICROPHONE
is required for Intercom operation.
Connect an optional HM-127 as described on pgs. 34, 57.
• Transmitting is impossible during Intercom operation.
• The received signal is muted during Intercom operation.
q Push [DSC•
IC] for 1 sec. to enter Intercom mode.
• The HM-127 power is automatically turned ON, even if the power
is OFF.
w Push and hold [DSC•IC] again to call up.
• The transceiver and microphone emit call beeps.
e Push and hold the PTT switch and speak at a normal voice
level into the microphone.
• “”or “”appears on the caller or listener function dis-
play, respectively.
• To adjust the IC-M402A’s speaker output level, rotate [VOL].
• To adjust the HM-127’s speaker output level, push [Y] or [Z]
after pushing [VOL] on the HM-127.
r After releasing the PTT switch you can hear the response
through the speaker.
t To return to the normal operation, push [DSC•
IC] momen-
tarily.
• Other keys also turn the function OFF, however, the correspond-
ing function is then activated (e.g. pushing [16•9
]
selects Chan-
nel 16).
• While in the Intercom mode, the transceiver functions
(transmit and receive) are interrupted. If the transceiver
is in transmit condition, the Intercom function is not avail-
able.
• When a DSC call is received, “DSC” appears and DSC
message is displayed at the channel comment indicator
after the Intercom use is finished.
• When a WX alert is received, “WX ALT” blinks and a
beep sounds. The WX alert sounds after the Intercom
use is finished.
IC-M402A (caller)
INT
HM-127 (listener)
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