Icom VHF MARINE TRANSCEIVER IC-M501EURO - Manual (Page 15)

■ 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. 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
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
DUAL WATCH/TRI-WATCH
4
11
INT
25W
DUP
16 TAG
TRI
INT
25W
DUP
16 TAG
TRI
BUSY INT
25W CALL
16
TAG
CALLING
BUSY INT
25W
DUP
16 TAG
CALLING
Tri-watch starts.
Signal is received
on call channel.
Signal received on
channel 16 takes
priority.
Tri-watch resumes
after the signal
disappears.
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