Icom IC-M505

14
DUALWATCH/TRI-WATCH
5
■ 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.
■ Operation
q Select Dualwatch or Tri-watch in Set mode. (p. 56)
w
Rotate [CHANNEL] to select the desired operating channel.
e Push [DIAL•DUAL/GRP] for 1 sec. to start Dualwatch or
Tri-watch.
 •“DUAL 16” appears during Dualwatch; “TRI 16” appears
during Tri-watch.
 •AbeeptonesoundswhenasignalisreceivedonChannel16.
r To cancel Dualwatch/Tri-watch, push [DIAL•DUAL/GRP]
again.
DUALWATCH/TRI-WATCH SIMULATION
When Ch 23 is programmed as the call channel.
•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].
[Example]: Operating Tri-watch on INT Channel 25
25W INT
DUP
TAG
TRI 16
34°34.506N
123°23.236W
UTC 12:00 TELEPHONE
BUSY 25W INT CALL
DUP
TAG
TRI 16
34°34.506N
123°23.236W
UTC 12:00 INTL
Tri-watch starts. Signal is received on call
channel.
BUSY 25W INT
DUP
TAG
TRI 16
34°34.506N
123°23.236W
UTC 12:00 TELEPHONE
Signal received on Channel
16 takes priority.
25W INT
DUP
TAG
TRI 16
34°34.506N
123°23.236W
UTC 12:00 TELEPHONE
Tri-watch resumes after the
signal disappears.
Dualwatch Tri-watch
Call channel
Dualwatch
Tri-watch
Call channel
Ch 88
Ch 16
Ch 88
Ch 16
Ch 88
Ch 23