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7 OTHER FUNCTIONS
Hailer operation
The IC-M504 has a hailer function for voice amplification over
a loudspeaker, making it unnecessary to leave the bridge to
talk a hailing party.
Connect an external hailer speaker (25 W nominal at
13.8 V/4 ) as described on p. 58.
• Transmitting is not possible during hailer operation.
• The received signal is muted during hailer operation.
q Push [HAILRX ] to enter hailer mode.
w Push and hold [PTT] and speak at a normal voice level
into the microphone.
•“
TTAALLKK
” appears.
•“
WWAAIITT
” appears at the channel comment indicator when the op-
tional command microphone is in use.
• To adjust the hailer level, rotate [DIAL].
e To return to normal operation, push [CLR] or [HAILRX ].
• While in the hailer mode, the transceiver functions (trans-
mit and receive) are interrupted. If the transceiver is in
transmit condition, the hailer function is not available.
When a DSC call is received, the hailer function is inter-
rupted with an automatic return to the transceiver mode.
The transceiver’s display indicates ‘Receiving DSC calls.’
(p. 41)
HAILERHAILER
1515
Push
58


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