Onwa Marine Electronics KC-480 - Manual (Page 4)

KC 480 operating controls and features
(rear view)
SQ control adjustments
Adjust SQUELCH to cut out annoying background noise when no
signal is being received. To do this ,set the Channel Selector to a
channel where no signals are present or wait until signals cease on
General rules for best mobile antenna
perfomance
Mount antenna on vessel as high as possible.
The higher percentage of the antenna length mounted above
Normally, this control should be set to MAX. position to provide
maximum receiver sensitivity for long range reception. However.
when communicating with a nearb y station, you may find that the
strong signal from this station may cause overloading of your
receiver. In such a case, you can use this control to reduce the
receiver sensitivity and thus prevent any overl oading and disto-
rtion that may occur as a result of the extremely strong incoming
signals. First set the switch to center and if this position will
not provide a sufficient reduction of overloading condition. Set
to minimum position.
your Channel. Then, rotate the SQUELCH control in a clockwise
direction to the point where the background noise jus t tops. Now,
when a signal is present, you will hear it, but will not be disturbed
by noise on the channel between signals.
RF gain control adjustment
rooftop make the better performance.
EXT SP holder.
RF coaxial holder.
DC power holder.
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(Rear view)