Dualwatch/Tri-Watch; Description; Operation - Icom IC-M504A Instruction Manual

5

DUALWATCH/TRI-WATCH

■ 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
Ch 16 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 dis-
appears.
• To transmit on the selected channel during Dualwatch/Tri-
watch, hold down [PTT].
14
Call channel
Ch 88 Ch 16 Ch 88 Ch 9
Tri-watch

■ Operation

q Select Dualwatch or Tri-watch in Set mode. (p. 54)
w Rotate [DIAL] to select the desired operating channel.
e Hold down [CH/WX•DUAL•U/I/C] for 1 second to start Du-
alwatch or Tri-watch.
• "DUAL 16" appears during Dualwatch; "TRI 16" appears dur-
ing Tri-watch.
• A beep tone sounds when a signal is received on Channel 16.
r To cancel Dualwatch/Tri-watch, push [CH/WX•DUAL•U/I/C]
again.
[Example]: Operating Tri-watch on INT Channel 25
Tri-watch starts.
25W INT
DUP
TRI 16
34°34.506N
123°23.236W
UTC 12:00 TELEPHONE
Tri-watch resumes after the
signal disappears.
25W INT
DUP
TRI 16
34°34.506N
123°23.236W
UTC 12:00 TELEPHONE
Signal is received on
Call channel.
BUSY 25W INT CALL
TAG
TRI 16
34°34.506N
123°23.236W
UTC 12:00 CALLING
Signal received on Channel
16 takes priority.
BUSY 25W INT
DUP
TRI 16
34°34.506N
123°23.236W
UTC 12:00 TELEPHONE