ICOM IC-M503 用户手册
■ Description
Dualwatch monitors Channel 16 while you are receiving an-
other channel; tri-watch monitors Channel 16 and the call
channel while receiving another channel.
other channel; tri-watch monitors Channel 16 and the call
channel while receiving another channel.
■ Operation
q Select the desired operating channel.
w Select dualwatch or tri-watch in set mode. (p. 15)
e Push [DUAL] to start dualwatch or tri-watch.
w Select dualwatch or tri-watch in set mode. (p. 15)
e Push [DUAL] to start dualwatch or tri-watch.
• “DUAL” appears during dualwatch; “TRI” appears during tri-
watch.
• Beep tone sounds when a signal is received on Channel 16.
• Tri-watch becomes dualwatch when receiving a signal on the call
• Tri-watch becomes dualwatch when receiving a signal on the call
channel.
r To cancel dualwatch/tri-watch, push [DUAL] again.
[Example]: Operating tri-watch on INT Channel 25.
DUALWATCH/TRI-WATCH SIMULATION
• If a signal is received on Channel 16, dualwatch/tri-watch pauses
on Channel 16 until the signal disappears.
• If a signal is received on the call channel during tri-watch, tri-
watch becomes dualwatch until the signal disappears.
• To transmit on the selected channel during dualwatch/tri-watch,
push and hold [PTT].
Dualwatch
Tri-watch
Call channel
DUALWATCH/TRI-WATCH
4
11
INT
25W
DUP
16
16
TAG
TRI
TRI
INT
25W
DUP
16
16
TAG
TRI
TRI
BUSY
INT
25W
CALL
16
TAG
CALLING
CALLING
BUSY
INT
25W
DUP
16
16
TAG
CALLING
CALLING
Tri-watch starts.
Signal is received
on call channel.
on call channel.
Signal received on
Channel 16 takes
priority.
Channel 16 takes
priority.
Tri-watch resumes
after the signal
disappears.
after the signal
disappears.
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