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5.B.(5)(h)
Shunt Antenna Mounting Location
Two types of shunt antennas are commonly used. The most preferable type,
on a fixed wing aircraft, is designed by the airframe manufacturer as a part
of the airframe structure. It is most often an electrically isolated section of
the leading edge of the vertical stabilizer, grounded at the top. The other
type of shunt antenna is often referred to as a "tranline" or "towel bar", which
is simply a rod or tube run external to a section of the airframe and
grounded.
Shunt antennas are suitable for high altitude aircraft because they do not
develop extremely high voltage but do develop extremely high RF current
(up to 50 amps).
5.B.(5)(i)
Leading Edge of Vertical Stabilizer Antenna Mounting Location
(refer to
A shunt antenna that is built into the leading edge of the vertical stabilizers
has become popular on many jet aircraft. Such an antenna provides no
drag, exhibits a rather omnidirectional radiation pattern and if well bonded
can provide moderate to good efficiencies. Good bonding of the antenna
and the KAC 1052 Antenna Coupler is essential.
A feedline exhibiting extremely low RF resistance must be used between
the KAC 1052 Antenna Coupler and the antenna.
Figure 2007 - Typical Shunt Leading Edge Antenna
Revison 2
N
KHF 1050 SYSTEM INSTALLATION MANUAL
"Figure 2007 - Typical Shunt Leading Edge Antenna"
23-10-09
)
Page 2011
Apr/2006
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