Dualwatch/Tri-Watch; I Description; I Operation - Icom iM504 Instruction Manual

5

DUALWATCH/TRI-WATCH

I 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
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].
14
Call channel
Tri-watch

I Operation

q Select Dualwatch or Tri-watch in Set mode. (p. 56)
w Rotate [DIAL] to select the desired operating channel.
e Push [CH/WX•DUAL•U/I/C] for 1 sec. to start Dualwatch
or Tri-watch.
• "D D U U A A L L 1 1 6 6 " appears during Dualwatch; "T T R R I I 1 1 6 6 " 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 25W INT INT
DUP DUP
TRI TRI 16 16
34°34.506N 34 34.506N
123 123°23.236W 23.236W
UTC 12 UTC 12:00 :00 TELEPHONE TELEPHONE
Tri-watch resumes after the
signal disappears.
25W 25W INT INT
DUP DUP
TRI 16 TRI 16
34 34°34.506N 34.506N
123°23.236W 123 23.236W
UTC UTC 12 12:00 :00 TELEPHONE TELEPHONE
Signal is received on call
channel.
BUSY 25W BUSY 25W INT INT CALL CALL
TAG TAG
TRI 16 TRI 16
34°34.506N 34 34.506N
123°23.236W 123 23.236W
UTC UTC 12 12:00 :00 CALLING CALLING
Signal received on Channel
16 takes priority.
BUSY 25W BUSY 25W INT INT
DUP DUP
TRI TRI 16 16
34 34°34.506N 34.506N
123 123°23.236W 23.236W
UTC 12 UTC 12:00 :00 TELEPHONE TELEPHONE