User's Manual

Professional
FM Transceiver
23
PRESET OPERATIONS
3.This transceiver is set with 16 groups of DTMF code, users can program and use them exibly.
Busy Channel Lockout
BCLO is to restrict transmitting while RX signal is received. When Busy Channel Lockout is set to
on, transmission is possible only in the specic conditions (and isn't possible otherwise).The alarm
beep sounds if the PTT key is pressed when transmission is prohibited.Busy Channel Lockout mode
available by programming software are as follows.
BCL:1.
Enable BCL, carrier wave lockout, transmitting is prohibited when receives any carrier.
BTL: 2.
Enable BTL, transmitting is prohibited when current channel receives a carrier signal that
CTCSS/DCS tones are different from your group's.
OFF:3.
Busy channel lockout is disabled. Default is OFF.