User Manual

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.