Icom IC-M502

■ 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.
■ Operation
q Select the desired operating channel.
w Select dualwatch or tri-watch in set mode. (p. 31)
e Push [CH/WX•DW•U/I/C] for 1 sec. 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.
r To cancel dualwatch/tri-watch, push [CH/WX•DW•U/I/C]
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
DUAL WATCH/TRI-WATCH
4
11
INT
25W
DUP
16
TAG
TRI
INT
25W
DUP
16
TAG
TRI
BUSY INT
25W CALL
16
TAG
TRI
BUSY INT
25W
DUP
16
TAG
TRI
Tri-watch starts.
Signal is received
on call channel.
Signal received on
channel 16 takes
priority.
Tri-watch resumes
after the signal
disappears.