E F Johnson Company 2425333 Benutzerhandbuch

The time-out timer disables the transmitter if it is keyed for longer than the programmed 
time. It can be programmed on each channel for times of 15 seconds to 3 minutes, 45 
seconds or it can be disabled.

If the transmitter is keyed continuously for longer than the programmed time, the 
transmitter is disabled, a continuous tone sounds, and “TX TIMEOUT” is displayed. Five 
seconds before time-out occurs, a warning beep sounds to indicate that time-out is 
approaching. The timer and tone are reset by releasing the PTT switch.

A different time can be programmed for each system, and the timer can be enabled or 
disabled on each conventional channel. With conventional channels, a penalty time can 
also be programmed that prevents further transmissions for a certain time after the 
transmitter is disabled (see Section 5.5).

One use of this feature is to prevent a channel from being kept busy for an extended period 
by an accidentally keyed transmitter. It can also prevent possible transmitter damage 
caused by transmitting for an excessively long period.

If the HOME zone option switch is programmed, pressing it selects the preprogrammed 
home zone and channel. This provides a quick way of returning to a frequently used zone 
and channel. Pressing and holding this switch until a tone sounds makes the currently 
selected zone the new Home zone. The radio is also programmed so that either the home 
or last selected zone/channel is automatically selected when power is turned on (see 
Section 3.1). A secondary Home Zone, Home2, may also be programmed.

Each conventional channel and SMARTNET/SmartZone and P25 Trunked system can be 
programmed for High, Low, or Switchable transmit power. If Switchable power is 
programmed on the channel or system, the Tx PWR option switch can then be used to 
select high or low transmitter power. All models support switchable power.