Icom IC-91A - I Break-In Communication

51
7
DV MODE OPERATION (Optional UT-121 is required for IC-91A)
7
■ Break-in communication
The break-in function allows you to break into a conversation,
where the two original stations are communicating with call
sign squelch enabled.
qWhile receiving an another station’s communication, push
and hold [RX➝CS](CALL) for 1 sec. to set the communi-
cating station’s call sign.
• When a call sign has not been received correctly, error beeps
sound and no call sign is set. Receive the call sign of a commu-
nicating signal again, or set the call sign manually.
wPush and hold [BK](9) for 1 sec. to turn the break-in func-
tion ON.
•“BK” appears.
eWhen both stations are in standby, push [PTT] to transmit
a break-in call.
• The programmed call sign station receives the break-in call as
well as your call sign.
rWait for the reply call from the station who receives the
break-in call.
tAfter receiving the reply call, communicate normally.
yTo cancel the break-in, push and hold [BK](9) for 1 sec. to
turn OFF.
BKBKDVDV
B
LOWLOW
ATTATT
430 712
50
Appears
• How to use the break-in?
While operating with the call sign squelch (p. 110), the
squelch never opens
(no audio sounds) even if a call is re-
ceived, unless your own call sign
(“MY”) is specified.
However, when the call including the “BK ON” signal
(break-
in call) is received, the squelch will open and audio sounds
even if the call is specified for another station.
Station A Station B
Station C
• Station C calling to Station A with “BK OFF”
Station A Station B
Station C
• Station C calling to Station A with “BK ON”
Station A and B are
communicating us-
ing the call sign
squelch.
Station A and B are
communicating us-
ing the call sign
squelch.
Station B never hears that
Station C is calling Station A.
Station B also hears that Sta-
tion C is calling Station A.
1
2
3
4
5
6
8
9
10
11
12
13
14
15
16
17
18
19