Icom IC-M502 Description Operation, DUALWATCH/TRI-WATCH Simulation, Call channel

Models: IC-M502 VHF MARINE TRANSCEIVER

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DUAL WATCH/TRI-WATCH

Description

Operation

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

DUALWATCH/TRI-WATCH SIMULATION

Call channel

DualwatchTri-watch

•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].

qSelect the desired operating channel.

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

ePush [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.

 

INT

Tri-watch starts.

25W

 

 

 

TAG

DUP

 

TRI

16Ê

 

BUSY

INT

Signal is received

25W

CALL

on call channel.

TAG

 

TRI

16Ê

 

BUSY

INT

Signal received on

25W

 

 

channel 16 takes

TAG

DUP

TRI

16Ê

priority.

 

INT

Tri-watch resumes

25W

 

 

after the signal

TAG

DUP

disappears.

TRI

16Ê

 

 

 

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Icom IC-M502, VHF MARINE TRANSCEIVER instruction manual Description Operation, DUALWATCH/TRI-WATCH Simulation, Call channel