Operating instructions

SRM9030plus ~ PMR Mobile Radio User Guide
© Comgroup Australia 2010 36 TNM-U-E-0092 Issue 1.1a
Table 2a Rated Power and Recommended Lateral Distance for General Population
uncontrolled exposure for SRM9000UW (440MHz to 512MHz).
Rated Power of
Vehicle- installed
Mobile Two-way Radio
Recommended
Minimum Lateral
Distance from
Transmitting Antenna
25 watts with λ
/4 dipole
(2.14dBi gain)
75cm (29.5 inches)
Table 2. Rated Power and Recommended Lateral Distance for Occupational/ Controlled
exposure for SRM9000UW (440MHz to 512MHz).
Rated Power of
Vehicle- installed
Mobile Two-way Radio
Recommended
Minimum Lateral
Distance from
Transmitting Antenna
25 watts with λ
/4 dipole
(2.14dBi gain)
34cm (13.5 inches)
Vehicle Installation Instructions:
The antenna(s) used for the SRM9000series of mobile two-way radios must be installed to
provide a separation distance of at least 75cm from all persons for SRM9000UW (440-
520MHz) and 90cm for SRM9000AC (136-174MHz). The gain of the antenna(s) may not be
greater than 0dBd (2.14dBi).
If the required separation distance extends beyond the physical boundary of the vehicle, the
antenna must be installed on the centre of the roof ONLY and must be installed in a vehicle
having the following characteristics in order to prevent bystanders from being exposed to
levels exceeding the limits set for General Population/ Uncontrolled exposure environment:
1. All passengers must be sitting under a solid metal roof
2. The rooftop width must be at least 150cm (59 inches) for SRM9000UW (440-
520MHz), or 180cm (71 inches) for SRM9000AC (136-174MHz).
Mobile Antenna:
1. Install the antenna at the centre of the roof or the centre of the boot deck, taking into
account the bystander exposure conditions of backseat passengers and
recommended minimum lateral distances in Table 1a) and 2a). These mobile antenna
installation guidelines are limited to metal body motor vehicles or vehicles with
appropriate ground planes.
2. The antenna installation must additionally be in accordance with:
a.) The requirements of the antenna manufacturer/supplier
b.) Instructions in the Radio Installation Manual, including minimum antenna cable
lengths.
c.) The installation information of how to install the antenna to facilitate
recommended operating distances to all potentially exposed persons.