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A variety of 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
.
i
more g~j/n the greater 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 or'wets.
Antennas
should
not have excc~..::.ively
long coaxial feed cab/cs.
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.
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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
r
power lead, any extension
should be made with # 10 A WG wire.
Long
extensions
should
use larger
wire.
3. Keep the antenna lead as short as pos-
sible. Long antenna
leclcJs CZlrl 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).
6. SeleCt a location
that allows free air
flow around the heat sink on the rear
of the radio.
7. Select a location well away frorn the
ship's compass. Auxiliary speakers also
should be located
away
from the com-
pass,
After you have cc!refl1l1y consicJerc(j
the
various factors affecting your choice
of
location,
position the radio (wi(i! the
bracket,
microphone,
power
iJlug,
antenna
plug
and
any
auxiliary
plugs
installed)
into
the
selected
location
to
assure,
there is no interference
with sur-
rounding items. Mark the location
of the
mounting
bracket.
Remby~ ,the bracket
fror:n the racJio and
use itas
a template
to mark the hole') to
be drilled
for the
mounting
rlc!rc!wcIre.
Drill the holes
and
mount
the
br,]cket
with hardware
compatible
with the mate-
rial of the mounting
~urface. fnst;l:1 the
power
cable
(red
f~ +,
black
1\ -I,
antenna
and all other
auxiliarycables and
accessories.
Install
the
radio
into
the
mounting
bracket and connect
all
cables an(j (~cces-
sories
to
the
apprf)priate
jacks
and
connecrors.
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