Uniden MC 790 - Manual (Page 3)

A variety o f antennas is available from a
number of quality suppliers. It is recom­
mended you draw upon the advice of
your Marine Dealer in determining a
suitable antenna for your vessel and
range, requirements.
The general rules, for antennas are: The
more gain the greker the range and, the
higher above the water line the greater
the range. Antennas should be located so
as not to be in proximity to metal olyccts.
Antennas should not have exccs.sively
long coaxial feed cables.
CHOOSING A tOCATfON
Some of the more important external fac­
tors to consider in selecting the location
of your MC790 are:
1. Select a location that is free from spray
and splash.
2. Keep the battery leads as short as pos­
sible. Connection directly to the
battery is most desirable. If direct
connection cannot be made with the
supplied ^power lead, any extension
should be made with # 1 0 AWG wire.
Long extensions should use larger
wire. '
I
3. Keep the antenna lead as short as pos­
sible. Long antenna leads cati cause
substantial
loss of performance for
both receiving and transmitting,
4. Locate your antenna as high as possi­
ble and clear from metal objects. The
reliable range of coverage is a direct
function of antenna height.
5. Select a location that does not allow
the radio to be subjected to direct sun­
light
(including that coming through
windows).
7, Select a location well away from the
ship's compass. Auxiliary speakers also
should be located away from the com­
pass.
After you have carefully considereo the
various factors affecting your choice of
location, position the radio (witii the
bracket, microphone, power plug,
antenna plug and any auxiliary plugs
installed) into the selected location to
assure, there is no interference witf? sur­
rounding items. Mark the location of the
mounting bracket.
Remove the bracket from the radio and
use it as a template lo mark the hrjie.s to
be drilled for the moutiting iiardware.
Drill the holes and mount the bracket
with hardware compatible with the mate­
rial of the mounting surface. Install the
power cable (red ly -t-, black is —),
antenna and all other auxiliary cables and
accessories.
Install the radio into the mounting
bracket and connect all cables and acces­
sories to the appcopriate jacks and
connectors.
6 . Select a location that allows free air
flow around the heat sink on the rear
of the radio.