Power source
Before connecting the unit to a suitable power source via the fused
DC power cable, the device must be switched off by turning the vo-
lume control (5) [
VOL
] counterclockwise to the very end until a clik-
king sound is heard.
Then, connect the two naked leads at the end of the cable with the
supply voltage of the vehicle battery. The unit is designed to operate
with 12 volts and a negative ground electrical system. Lay the cable
as far as possible away from aggregates which can cause interfe-
rence. Watch for the correct polarity during the connection.
BLACK connect to - MINUS / ground of the car battery.
RED
connect to 12 volts + PLUS of the vehicle’s battery.
If the cable is not disconnected from the power source, the last settings
will remain stored after the radio and the car are switched off.
After proper connection of the aerial and the power source, radio
operation can be started.
Aerial Connection
Before pressing the transmit key, a suitable aerial must be con-
nected. The PL259 plug of the aerial cable (coax) is connected to
the SO239 socket (8) on the rear panel. Make sure, that all plugs are
firmly tightened and properly soldered. Insufficient connections can
damage the radio and will reduce the range of operation.
The antenna should be matched with the radio, otherwise a part of
the transmit power will be reflected at the antenna and will not be ra-
diated. This reduces the range of operation. The matching of antenna
to radio, is performed by a length adjustment of the antenna radial
in aim for a minimal SWR ratio which can be measured by a SWR
meter, e.g. TEAM SWR 1180P. After the measurement the SWR
meter should be removed from the antenna line.
Installation in the car
When you want to fix the unit in your car, you can either fasten it with
the help of the included mounting bracket below the dashboard. Always
mount the transceiver where the switches are easily accessible. Other
important points to consider for a correct mounting position are:
> no interference of the roadworthiness,
> good access to the controls of the car,
> sufficient air circulation to prevent overheating of the radio in
transmit mode.
Please consider the perspective onto the display while driving. Star-
ting from a certain angle of view, the readability of the display dimi-
nishes. An intensive solar irradiation can also affect the readability
of the display. So it is recommended to check the best position before
the final installation. The unit can easily be fixed onto different posi-
tions in the car by using the enclosed mounting bracket.
Microphone
The microphone is permanently connected to the radio, it cannot be re-
moved. It contains the PTT key, as well as the channel selectors UP and
DOWN.
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