Dualwatch/Tri-Watch; I Description; I Operation - Icom VHF MARINE TRANSCEIVER IC-M501EURO Instruction Manual

I 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.
DUALWATCH/TRI-WATCH SIMULATION
Dualwatch
• 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].
DUAL WATCH/TRI-WATCH
Call channel
Tri-watch

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