MM-015371-001, Rev. C
71
15.3 TRANSMIT POWER LEVEL ADJUSTMENTS
15.3.1
General Information
M5300/M7300 mobile radio factory programming sets maximum transmit RF output power to 35 watts in
EDACS/ProVoice, conventional, and P25 modes, and 19 watts in OpenSky mode.
To meet the minimum safe lateral distances listed in Table 1-1 (page 8), an M5300/M7300 mobile radio
used in a motorcycle application must programmed for a
transmit RF output power level that does not
exceed 20 watts
. This reduced radio transmit RF output power level also lowers the overall DC load on
the motorcycle’s battery and battery charging system (i.e., alternator). Motorcycles with mobile radios are
typically equipped with additional lights, light flashers, sirens, a PA system, and other electrical
equipment which place additional demand on the motorcycle’s battery and battery charging system.
CAUTION
In a motorcycle application, do
not
use an M5300/M7300 mobile radio with a transmit
RF output power level exceeding 20 watts. Doing so violates the maximum regulatory
RF power rating specified for this application. In addition, exceeding 20 watts may
result in damage to the motorcycle’s charging system, battery, and other electrical
circuits.
Transmit power level adjustment procedures are presented in the following subsections for all operating
modes. Typically, adjustment (a reduction in transmit RF output power) will be required for
EDACS/ProVoice, conventional, and P25 (ECP) operating modes.
15.3.2
Adjusting Maximum Transmit Output Power for EDACS/ProVoice,
Conventional, and P25 Modes
Adjustment is performed by the Radio Personality Manager (RPM) software application. Follow this
procedure to program each radio system for a 20-watt or less transmit output power level:
1.
Connect the radio’s DB-9 serial port connector to a Personal Computer (PC) that has a terminal
application installed, such as Microsoft Windows HyperTerminal. To make this connection, use cable
MAMROS0055 (6 feet), cable CA-013671-010 (10 feet) or cable CA-013671-020 (20 feet). Also, if
the utilized PC is not equipped with a DB-9 serial port connector, the use of a suitable adapter will be
required, such as USB-to-RS-232 Adapter Cable CN24741-0001.
2.
Power-up the radio and allow time for it to boot-up.
3.
Start-up RPM and read the radio’s personality.
4.
Double-click the Systems tab to open the System Setup dialog box. Figure 15-1 shows a typical
dialog box.
5.
Each radio system listed in the
System Name
list has a maximum power level which is set via the
respective
Power Level
text box. Enter the required maximum power (in watts) on a per-system
basis. Do
not
enter a setting of more than 20 (for 20 watts).
6.
Click on each name in the
System Name
list as required to verify each radio system in the
personality has a
Power Level
setting of
20 watts or less
.
7.
Send the updated personality to the radio.
8.
Save the updated personality as necessary.
