ICOM VHF MARINE TRANSCEIVER 说明手册

■

Dualwatch monitors channel 16 while you are receiving an-
other channel; tri-watch monitors channel 16 and the call
channel while receiving another channel.

■

q

Select the desired operating channel.

w

Select dualwatch or tri-watch in set mode. (p. 31)

e

Push [CH/WX•DW•U/I/C] for 1 sec. to start dualwatch or
tri-watch.

• “DUAL” appears during dualwatch; “TRI” appears during tri-watch.
• Beep tone sounds when a signal is received on channel 16.

r

To cancel dualwatch/tri-watch, push [CH/WX•DW•U/I/C]
again.

[Example]: Operating tri-watch on INT channel 25.

• 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].

Call channel

4

11

INT

25W

DUP
16 

TAG
TRI

INT

25W

DUP
16 

TAG
TRI

BUSY

INT

25W

CALL

16 

TAG
TRI

BUSY

INT

25W

DUP
16 

TAG
TRI

Tri-watch starts.

Signal is received 
on call channel.

Signal received on 
channel 16 takes 
priority.

Tri-watch resumes 
after the signal 
disappears.