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11
4
DUALWATCH/TRI-WATCH
3
4
■
Description
Dualwatch monitors Channel 16 while you are receiving an-
other channel; tri-watch monitors Channel 16 and the call
channel while receiving another channel.
■
Operation
q
Select Dualwatch or Tri-watch in set mode. (p. 46)
w
Push
[
▲
]
or
[
▼
]
to select the desired operating channel.
e
Push
[CH•DUAL]
for 1 sec. to start Dualwatch 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 or Tri-watch, push
[CH•DUAL]
again.
[Example]:
Operating tri-watch on INT channel 25.
BUSY
BUSY-INT----
25W
25W-DUP
DUP-TAG
TAG-
TRI
TRI
16
16
-
23 34.154N
34.154N-
135
135 34.351E
34.351E-
TELEPHON
TELEPHON-
UTC
UTC-12:00
12:00-
BUSY
BUSY-INT----
25W
25W-
-TAG-
TRI
TRI
16
16
-
23 34.154N
34.154N-
135
135 34.351E
34.351E-
INTL
INTL
-
UTC
UTC-12:00
12:00-
-INT
INT----
25W
25W-DUP
DUP-TAG
TAG-
TRI
TRI
16
16
-
23 34.154N
34.154N-
135
135 34.351E
34.351E-
TELEPHON
TELEPHON-
UTC
UTC-12:00
12:00-
-INT
INT----
25W
25W-DUP
DUP-TAG
TAG-
TRI
TRI
16
16
-
23 34.154N
34.154N-
135
135 34.351E
34.351E-
TELEPHON
TELEPHON-
UTC
UTC-12:00
12:00-
Tri-watch starts.
Signal is received on call
channel.
Signal is received on
Channel 16 takes priority.
Tri-watch resumes after
the signal disappears.
DUALWATCH/TRI-WATCH SIMULATION
• 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
Dualwatch
Tri-watch
!IC-M421-3.qxd 06.5.26 1:43 PM Page 11 (1,1)
Summary of Contents for IC-M421
Page 1: ......
Page 42: ...re ush call or r Push ENT to transmit the polling request call to the se lected station ...
Page 61: ...55 12 TEMPLATE 11 12 Unit mm 164 78 149 61 6 ...
Page 62: ......
Page 63: ...57 28 3 14 2 111 2 60 6 Unit mm ...
Page 64: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan ...