Dualwatch/Tri-Watch; Description; Operation - Icom IC-M603 Instruction Manual

■ Description

Dualwatch monitors Channel 16 while you are receiving
on another channel; Tri-watch monitors Channel 16 and the
call channel while receiving another channel. Dualwatch/Tri-
watch is convenient for monitoring Channel 16 when you are
operating on another channel.
DUALWATCH/TRI-WATCH SIMULATION
When Ch 23 is programmed as the call channel.
Ch 16 Ch 88 Ch 88
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].

DUALWATCH/TRI-WATCH

Call channel
Ch 23
Ch 16 Ch 88
Tri-watch

■ Operation

q Select the desired channel.
w Push [F], then push [1•
[2• ] to start Tri-watch.
TRI
• "DUAL 16" appears during Dualwatch; "TRI 16" appears
during Tri-watch.
• A beep tone sounds when a signal is received on Channel 16.
e To cancel Dualwatch or Tri-watch, push [CLR] or repeat
step w.
[Example]: Operating Tri-watch on INT Channel 25
Tri-watch starts.
25W INT
DUP
TAG
TRI 16
34°34.506N
123°23.236W
UTC 12:00 TELEPHONE
Tri-watch resumes after the
signal disappears.
25W INT
DUP
TAG
TRI 16
34°34.506N
123°23.236W
UTC 12:00 TELEPHONE
4
] to start Dualwatch or
DUAL
Signal is received on call
channel.
BUSY 25W INT CALL
DUP
TAG
TRI 16
34°34.506N
123°23.236W
UTC 12:00 INTL
Signal received on Channel
16 takes priority.
BUSY 25W INT
DUP
TAG
TRI 16
34°34.506N
123°23.236W
UTC 12:00 TELEPHONE
3
4
13