Icom IC-905 - BK mode communication

11
D-STAR OPERATION (ADVANCED)
11-15
BK mode communication
The Break-in (BK) function enables you to break into a conversation, where the 2 stations are communicating with
call sign squelch (DSQL) enabled.
L The BK function is automatically turned OFF when you turn OFF the transceiver.
L This function can be used in the DV or DD mode.
1. While 2 stations are communicating, touch
for 1 second.
• After releasing , the calling station’s call sign or
the repeater’s call sign is set to “TO” (Destination).
• Beeps sound, and the calling station’s call sign is
announced.
L When a call sign is not received correctly, error beeps
sound, and no call sign is set.
2. Open the BK screen.
»
SET > DV/DD Set > BK
3. Touch “ON.”
4. To close the DV/DD SET screen, push
several times.
• Returns to the standby screen, and “BK” is displayed.
5. When both stations are in standby, hold down
[PTT] to transmit.
L “BK” blinks when receiving a Break-in call.
L To cancel the BK mode, touch “OFF” in step 3, or turn
OFF the transceiver.
How to use Break-in?
While using the Digital Call Sign squelch (DSQL), the squelch never opens (no audio is heard) even if a call is
received, unless the call is addressed to your own call sign.
However, when a call including the “BK ON” signal (break-in call) is received, the squelch opens and audio is heard
even if the call is addressed to another station.
Station C calling to Station A with “BK OFF” Station C calling to Station A with “BK ON”
Station A
Station B
Station C
Station A
Station B
Station C
Station A
and B are
communicating
using the
Digital Call Sign
squelch.
Station B does not hear that
Station C is calling Station A.
Station B also hears that
Station C is calling Station A.
Station A
and B are
communicating
using the
Digital Call Sign
squelch.