p.4
p.5
vehicle with proper connection to ground. Before connecting the
antenna to the radio, it is necessary to check the correct operation
of the antenna with low standing wave ratio (S.W.R.) via adequate
instruments. If not, the transmitter circuit of the radio could be dam-
aged. The antenna usually must be installed on the highest part of
the vehicle, free from obstacles and as far away as possible from any
source of electric or electromagnetic noise. The RF antenna coaxial
cable must not be damaged or pressed on its way between anten-
na and the radio. The correct operation of the antenna and the low
standing wave ratio (S.W.R.) must be checked periodically. Connect
the RF antenna coaxial cable to the
antenna connector
!5
, located
on the rear side of the radio.
2.3 CHECKING OPERATION OF THE RADIO
Once radio has been connected to the vehicle electric system
and to the antenna, the correct operation of the system should be
checked. Please proceed as following:
1) Check that the power cable is correctly connected.
2) Check that the RF antenna coaxial cable is properly connected.
3) Connect the microphone to the
connector
q
that is on the front
side of the radio.
4) Rotate the
SQUELCH
r
knob anticlockwise.
5) Turn radio on by the
OFF/VOL
y
knob and adjust volume to the
desired level.
6) Select the desired channel with the up/down key on the front side
of the radio.
7) Rotate the
SQUELCH
r
knob clockwise to cut the background
noise.
8) Press the PTT key to transmit and release it to receive.
9) Check the level of the received and transmitted signals on the 4
bar RX signal Meter and TX LED. The transceiver will work correctly.
2. INSTALLATION
Before installing the main unit in the vehicle, please check and select
the most convenient position, in order that the radio will be easy to
reach and comfortable to operate without disturbing or interfering
driving. Use the supplied bracket and hardware to install the radio.
The bracket screws must be
well tightened to avoid loose-
ness as the vehicle vibrates.
The car mounting bracket
can be installed over or be-
low the radio and the radio
may be inclined as desired
according to the specific
type of installation (under
dashboard or track cabin roof installation).
2.1 INSTALLATION OF THE MAIN UNIT
Before connecting the radio to the vehicle electric system, please
make sure the radio is powered off with the
OFF/VOL
y
knob com-
pletely turned anticlockwise at OFF position. The DC power cable of
the radio includes a fuse holder with fuse located on the red positive
(+) wire. Please connect the DC power cable to the vehicle electric
system with special attention to correct polarity, even if the radio is
protected against polarity inversion. Connect the red wire to the posi-
tive (+) pole and the black wire to the negative (-) pole of the vehicle
electric system. Please make sure that the wires and terminals are
firmly connected, to prevent cables from disconnecting or causing
short circuits.
2.2 INSTALLATION OF THE ANTENNA
A specific mobile antenna adjusted for 27 MHz frequency range must
be used. The antenna installation must be done by a qualified tech
-
nician or service center. Please install the antenna carefully on the
