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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. 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.
DUALWATCH/TRI-WATCH SIMULATION
Dualwatch
Tri-watch
Call channel
Ch 88
Ch 16
Ch 88
Ch 16
Ch 88
Ch 9
• 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].
[Example]: Operating Tri-watch on INT Channel 25
25W
INT
DUP
TRI 16
34°34.506N
123°23.236W
UTC 12:00 TELEPHONE
BUSY 25W
INT
CALL
TAG
TRI 16
34°34.506N
123°23.236W
UTC 12:00
CALLING
Tri-watch starts.
Signal is received on
Call channel.
BUSY 25W
INT
DUP
TRI 16
34°34.506N
123°23.236W
UTC 12:00 TELEPHONE
Signal received on Channel
16 takes priority.
25W
INT
DUP
TRI 16
34°34.506N
123°23.236W
UTC 12:00 TELEPHONE
Tri-watch resumes after the
signal disappears.
Summary of Contents for IC-M504A
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