Operator's Manual

22
PROGRAMMABLE PTT FUNCTIONS
Channel Busy Lockout
The radio may be programmed with the Channel Busy Lockout feature,
which denies the use of the transmitter when the channel is busy with traffic.
If the PTT button is pressed while the TX/RX LED is ON, the radio will emit
an alert tone until the PTT is released.
Channel Guard Channel Busy Lockout
The radio may be programmed with the Channel Guard Busy Lockout
feature, which denies the use of the transmitter when the channel is busy
with another Channel Guard tone. The radio will transmit when the channel
is busy with the radio's Channel Guard tone.
If the PTT button is pressed while the TX/RX LED is ON and the radio is
muted because of an incorrect Channel Guard tone, the radio will emit an
alert tone until the PTT is released.
Type 99 Disable After PTT
The radio may be programmed with the Type 99 Disable After PTT feature,
which automatically disables the Type 99 decoder after a transmission.
Use one of the methods outlined in the “Resetting Type 99 After A Call”
section to reset Type 99 operation.
Ignition Sense Tx Disable
The radio may be programmed to deny the use of the transmitter if there is
no voltage on the Ignition A+ line. This feature prevents unauthorized use of
the radio and accidental high current battery drain.