53SL ES Series Mobile Radio Operating Manual April 2009
5-5
Power Output Select
Section 5 - Radio Wide Features
5.5
Power Output Select
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.
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 or system, the fixed power level is flashed
and no power change occurs. The selected power level 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.
5.6
Alert Tone Select
The various alert tones that sound are described in Section 10.1. 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 can be disabled depending on
programming.
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.
5.7
Power Turn-Off Delay
The radio can be installed so that the vehicle ignition 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
53SL ES Service Manual for more information. A power-off delay of up to 510 minutes
can then be programmed or this feature can be disabled by programming “Inf” so there is
no automatic power OFF.
