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• For optimal operation with external
antennas, low loss RF shielded cable
should be used and the length of the
cable should not exceed 10 ft. (3 m).
• The receiver antennas should be
kept away from any metal surfaces
whenever possible as they can reflect
away or shield the incoming RF signal.
• If the receiver’s volume control is set
too high, it may overdrive the input
of the attached audio mixer, causing
distortion. Conversely, if the output
is set too low, the overall signal-to-
noise ratio of the system may be
reduced, causing noticeable hiss. If
such noise occurs, adjust the output
level of the receiver so that highest
sound pressure level going into
the microphone transmitter causes
no input overload in the mixer, but
permits the mixer level control to
operate in the normal range (not too
high and not too low). This provides
the optimum signal-to-noise for the
entire system.
• Before inserting the batteries, ensure
that they are inserted with the correct
polarity.
• Before operation, confirm that the
receiver and associated transmitter are
tuned to the same frequency group
and channel number.
• After making a receiver channel
change, ensure that the corresponding
change is also made on the matching
transmitter.
• Use only brand new alkaline batteries.
Do not use “general purpose”
carbon batteries. When batteries are
weak, replace all the batteries at the
same time. Do not mix new and old
batteries.
• Position the receiver so that it has the
least possible obstructions between
it and the transmitter. Line-of-sight is
best!
• During operation, the transmitter and
the receiver should be as close as
possible for optimum results but never
closer than 3 ft. (1 m) as that may
overload the receiver’s input circuitry
and cause noises.
• For the best operation, the receiver
should be placed at least 3 ft. (1 m)
above the ground and 3 ft. (1 m) away
from a wall or metal surface. The
transmitter should also be at least 3 ft.
(1 m) from the receiver. Keep antennas
away from noise sources such as
motors, automobiles, neon lights,
signal processors, computers, as well
as large metal objects.
• A receiver cannot receive signals
from two or more transmitters
simultaneously.
• Turn the transmitter off when it is
not in use. For longest life, remove
the batteries if the unit is not to
be used for a long period as the
transmitters draw a tiny residual
current to maintain the programmed
settings, even when turned off. Also,
since batteries installed for a long
time can sometimes corrode and/or
leak, causing damage, it is generally
recommended that batteries be
removed whenever the transmitters
are not being used.
Miscellaneous Tips
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