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BACKGROUND OPERATIONS
Signaling Relations Setup
Users can set relations between CTCSS/DCS signal and DTMF signal by programming software.
AND: Only when a matching CTCSS/DCS signal and a DTMF signal are received, can calling of
other party be heard.
OR: As long as a matching CTCSS/DCS signal or a DTMF signal is received, calling of the other
party can be heard.
Wide / Narrow Band Setup
On the basis of national conditions, users can set channel spacing as 25K (wide band), 20K (
middle band) or12.5K (narrow band) to communicate on the transceiver by programming software.
The optional band width are 25K(wide band),20k(middle band),12.5K(narrow band).
Busy Channel Lockout
When BCL function is enabled, you can not transmit in busy channel. BCL prevents you from
interfering with other parties who is using the same frequency point that you select. Under this
condition, if you press the [PTT] to transmit, the transceiver will emit beep prompt and return to
receiving mode.
Users can set Busy Channel Lockout mode by programming software.
1.
Repeater (BTL):
matched carrier with different CTCSS/DCS.
2.
Carrier wave (BCL):
receives a matched carrier wave.
3.
OFF
: BCL disabled, you can do transmission under whatever receiving state.
26
Professional
FM Transceiver
Repeat lockout, transmitting is inhibited when current channel receives a
Carrier busy lockout, transmitting is inhibited when current channel
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