Uniden MC 722 User Manual

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MC 722 - 90 CHANNEL
MARINE RADIOTELEPHONE
OWNER’S MANUAL

UNIDEN MC722

The UNIDEN MC 722 VHF marine radio transceiver has been designed to give you a
rugged reliable instrument that will provide you with years of trouble-free service.
You are encouraged to thoroughly read this manual to acquaint yourself with the
characteristics and operation of your transceiver so that you can contribute to the
longevity of your investment.

With proper care and maintenance, your UNIDEN MC 722 will outlast your present
vessel and serve you well on board several more. The full features and flexibility
designed into this quality transceiver will prevent it from becoming obsolete regard
less of changes in craft or geographic locations. The unit may be mounted in any
number of convenient locations by utilizing the universal mounting bracket. All
legally available Australia and international channels are provided. The technical ex
cellence of the UNIDEN MC722 is demonstrated by the multiplicity of uses for
which it has been found acceptable by the Department of Communications. The
UNIDEN MC 722 is acceptable for compulsory use on "party boats,” for use on
vessels subject to the Great Lakes Radio Agreement or bridge-to-bridge requirements,
for Canadian registered craft, for general pleasure and commercial vessels and certain
land stations in marine service.

The UNIDEN MC 722 is of all solid state design with conservatively rated rugged
components and materials compatible with the marine environment. The transceiver
utilizes gaskets, sealing rings, waterproof membranes and other sealants to effect a
splashproof housing for protection of the electronics.

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INSTALLATION

CAUTION: The MC 722 will operate only with a nominal 12 volt negative

ground battery system.

CHOOSING A LOCATION

1. Select a location that is free from spray and splash.

2. Select a location that minimizes exposure to direct sunlight {including that com
ing through windows),

3. Select a location that allows free air flow around the heat sink on the rear of the
radio.

4. Select a location well away from the ship's compass. Auxiliary speakers also
should be located away from the compass.

5. Select a location as close to the battery as possible {in order to keep 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 at least #10 AWG wire,

ENGINE NOISE SUPPRESSION

Interference from the impulse noise generated by the electrical systems of engines is
sometimes a problem with radios. The MC 722 has been designed to be immune to
ignition impulse noise and alternator noise. However, in some installations it may be
necessary to take measures to further reduce the effect of noise interference. All DC
battery wires, antenna leads and accessory cables should be routed away from the
engine and engine compartments 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 that is available from your UNI DEN Dealer.

ANTENNA CONSIDERATIONS

1. Keep the antenna lead as short as possible. Long antenna leads can cause substan
cial loss of performance for both receiving and transmitting,

2. Locate your antenna as high as possible and clear from metal objects. The reliable
range of coverage is a direct function of antenna height. The general rules for
antennas are: The more gain the greater the range and, the higher above the water
line the greater the ranger,

MOUNTING CONSIDERATIONS

Keep in mind the flexibility designed into the MC 722 so that you can most con

veniently use your radio. The points which should be considered are:

1. Universal mounting bracket may be installed on either top or bottom for shelf
bulkhead, or overhead mounting.

2. The microphone connector faces forward allowing convenient in-dash or "built­in" installations.

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