E F Johnson Company 2425341 Benutzerhandbuch

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The six option switches on the front panel (one is 

located to the left of the display) can be programmed 
by the PCConfigure programmer to control a different 
set of functions for each of the three operating modes. 
Therefore, up to 18 different functions can be 
controlled by these switches (six each for conven-
tional, SMARTNET/SmartZone, and P25 Trunking). 
The available functions in each mode and the section 
in which each is described are shown in Table 4-1. 

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 channel. 

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. 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).

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, the Tx PWR option switch can then be used 
to select high or low transmitter power. All models 
support switchable power.

Pressing the TX PWR switch toggles the power 

setting. The new level is flashed in the display when 
this switch is pressed as “HI POWER” or “LOW 
POWER”. If selectable power is not permitted on the 
current channel, the fixed power level is flashed as 
“FIXED HIGH” or “FIXED LOW” and no power 
change occurs. The selected power level for a channel 
is permanent until it is manually changed again.The 
power levels are set at the factory or when the radio is 
tuned using the PCTune™ software. The factory 
default low power setting is one-half the high power 
setting.

The various alert tones that sound are described 

in Section 7.1 on page 46. These tones can be enabled 
and disabled if the TONE option switch is 
programmed. To turn all tones off, press this switch 
and “TONE OFF” is displayed. Then to turn all tones 
on again, press it and “TONE ON” is displayed. If this 
switch is not programmed, tones are fixed in the on or 
off condition by programming. Alert tones are totally 
disabled when the Surveillance mode is programmed 
(see Section 4.9).

The Alert Tone volume* can be adjusted relative 

to the volume control setting. This is done by 
programming and also by the user if the TN VOL 
option switch is programmed. Relative levels of –170 
to +170 can be set with “0” the default setting. A 
minus value decreases the tone volume and a plus 
value increases it. The user adjusted level permanently 
overrides the programmed level if applicable.

The radio can be installed so that the vehicle igni-

tion switch as well as the front panel power switch of 
the radio control power. This is done by connecting the 
accessory cable ignition switch input to the vehicle 
ignition switch. Refer to the Installation section of the 
5300 Service Manual for more information. A power-
off delay of up to 254 minutes can then be 
programmed or this feature can be disabled by 

** This feature requires 5300 operating (ARM) soft-
ware 1.22 or later and PCConfigure 1.20 or later.