Uniden LTD 715 - Manual (Page 3)

INSTALLATION
CAUTION: The LTD 715 will operate only with nominal 12 volt
negative ground battery systems.
It is important to carefully determine the most suitable location for your
LTD 715 on your vessel. Electrical, mechanical, and environmental
considerations must all be taken into account. You must select the
optimum relationship among these considerations.
Keep in mind the flexibility designed into the LTD 715 so that you can
most convenientiy use your radio. Features which should be considered
are:
1. The universal mounting bracket may be installed on either the lop or
bottom of a sheif, on a bulkhead, or for overhead mounting.
2. The REMOTE speaker jack can be used with an auxiiiary speaker.
3. All connections are “piug-in" type for easy removal of the radio.
CHOOSING A LOCATION
Some important factors to consider in seiecting the iocation for your
LTD 715 .
1. Seiect a location that is free from spray and splash.
2. Keep the battery leads as short as possible. Direct connection to
the battery is most desirable. If direct connection cannot be made
with the supplied power lead, any extension should be made with
ff 10 AWG wire. Long extensions should use larger gauge wire.
3. Keep the antenna lead as short as possible. Long anteniia leads
can cause substantial loss of performance for botn receiving and
transmitting.
4. Locate your antenna as high as possible 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 sunlight (including that coming through windows).
6. Select a location that allows free air flow around the heal sink on the
rear of the radio.
7. Select a location well away from the ship’s compass. Auxiliary
speakers also should be located away from the compass.
ENGINE NOISE SUPPRESSION
Interference from the impulse noise generated by the electrical systems
of engines is sometimes a problem with radios. The LTD 715 has been
designed to be essentially impervious to ignition impulse noise and
alternator noise. However, in some installations it may be necessary to
lake measures to further reduce the effect of noise interference. Ail DC
battery wires, antenna lead, and accessory cables should be routed away
from the engine and engine compartment, and from power cabling
carrying particularly high currents.
In severe cases of impulse noise interference, it may be necessary to
install a noise suppression kit. Contact your PRESIDENT Dealer for
more information.
ANTENNA CONSIDERATIONS
A variety of antennas is available from a number of quality suppliers, it is
recomrnended you draw upon the advice of your PRESIDENT Dealer in
determining a suitable antenna for your vessel and range requirements.
In general, communication range is increased by using a high-gain
antenna placed as high as possible above the water line. Antennas
should be located away from metal objects. Antennas should not have
excessively long coaxial feed cables.
INSTALLING THE LTD 715
After you have carefully considered the various factors affecting your
choice of location, position the radio (with the bracket, microphone,
power cord, antenna and any auxiliary cables installed) into the selected
location to assure there is no interference with the surrounding items.
Mark the location of the mounting bracket. Remove the bracket from the
radio and use it as a template to mark the holes to be drilled for the
mounting hardware. Drill the holes and mount the bracket with hardware
compatible with the material of the mounting surface.
Connect the red wire of the supplied power cord to the positive (+) battery
supply. Connect the black wire of the power cord to ground. The power
cord is equipped with a fuse to protect the radio. Use only a Six (6)
AMPERE fast blow fuse for replacement. Connect the power cord to the
keyed connector on the power "pigtail" (See page 6).
Connect the antenna and all other auxiliary cables and accessories.
Install the radio in the mounting bracket and connect ail cables and
accessories to the appropriate jacks and connectors.