36
7
OTHER FUNCTIONS
■ Intercom operation
The optional Intercom function allows you to talk to the deck
from the cabin. The optional HM-127
REMOTE-CONTROL MI-
CROPHONE is required for Intercom operation.
Connect an optional HM-127 as described on pgs. 43, 65.
• Transmitting is impossible during Intercom operation.
• The received signal is muted during Intercom operation.
q Push
[
[
LO/DX
LO/DX
]
]
(
(
SCR)
SCR) 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
[
[
LO/DX
LO/DX
]
]
(
(
SCR)
SCR) 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.
•“TALK” or “LSTN” appears on the caller or listener function dis-
play, respectively.
• To adjust the IC-M502A’s speaker output level, rotate
[
[
VOL
VOL
]
].
• To adjust the HM-127’s speaker output level, push after
[
[
VOL
VOL
]
]
pushing
[
[
YY
YY
]
]
/
[
[
ZZ
ZZ
]
].
r After releasing the PTT switch you can hear the response
through the speaker.
t To return to the normal operation, push
[
[
LO/DX
LO/DX
]
]
(
(
SCR)
SCR)
momentarily.
• Other keys also turn the function OFF, however, the correspond-
ing function is then activated (e.g. pushing
[
[
9
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 received” ap-
pears and the last received DSC message is displayed
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.
16
16
IC
