I Break-In Communication - Icom IC-91A Instruction Manual

I 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 (p. 00).
qWhile receiving an another station's communication, push
and hold [CALL/RX➝CS] 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 included in a
communicating signal again, or set the call sign manually in this
case.
wPush and hold [9/T.SCAN/BK] for 1 sec. to turn the break-
in function ON.
• "BK" appears.
DV DV
430 712
B
LOW LOW
ATT ATT
eWhen both stations are in standby, push [PTT] to transmit
a break-in call.
• 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.
t After receiving the reply call, communicate normally.
yTo cancel the break-in, push and hold [9/T.SCAN/BK] for
1 sec. to turn OFF.
DV MODE OPERATION (Optional UT-121 is required for IC-91A)
BK BK Appears
50
PSKIP PSKIP
• How to use the break-in?
While operating with the call sign squelch (p. 00), 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
is received, the squelch will open and audio sounds
in call)
even if the call is specified for another station.
• Station C calling to Station A with "BK OFF"
Station A and B are
communicating us-
ing the call sign
squelch.
Station A
Station B never hears that
Station C is calling Station A.
• Station C calling to Station A with "BK ON"
Station A and B are
communicating us-
ing the call sign
squelch.
Station A
Station B also hears that Sta-
tion C is calling Station A.
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1
2
3
(break-
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5
6
7
8
9
Station B
10
11
12
Station C
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Station B
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18
19
Station C
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