Specifications

Antenna Requirements
The flexible antenna that is
included with the KX 99 is very
convenient and may be used for both
communications and navigation
purposes. However a more efficient
antenna may be required for some
applications. For maximum utilization
of the
KX 99 inside an aircraft,
automobile or other metal enclosure,
an external COMM antenna should be
used for communications and an
external NAV antenna should be used
for navigation. An external communi-
cations antenna will noticeably
improve the reception and transmis-
sion of communication radio signals;
however, it is not recommended for
receiving navigation signals. The use
of a horizontal type navigation
antenna will improve the reception
and the directional characteristics
of
the navigation signal but it is not
recommended for communications
transmissions from the KX 99. The
BNC type connector, located on the
top
of the unit, is standard for use on
aircraft radios and antennas
so little
difficulty should be encountered when
connecting to an existing aircraft
communications or navigation an-
tenna.
VOR navigation signals are
received best by a horizontal antenna
while communications signals are
received best by a vertical antenna.
This is a good point to keep in mind
when trying
to receive weak signals.
When using the flexible antenna in the
cockpit
or an automobile, try to place
the antenna in the center of a window
which is facing the station you are
trying
to receive. Remember, if the
received station is weak and noisy,
that station is not likely to hear your
transmission. Obtain the best received
signal before attempting to call the
station.
When the KX 99 is
to be used as
an emergency backup Comm or Nav
radio in an aircraft, one
or two antenna
adapters (P/N 071 -01443-0001) may
be installed
to easily connect the
KX 99 to the existing aircraft antennas.
See diagram below.
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