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Preliminary - Subject to Change Without Notice
5.B.(6)(d)2 Shorted Tranline or Towel Bar Antenna Mounting Location
Revision 0
10640I00.SLK
KHF 1050 SYSTEM INSTALLATION MANUAL
A large diameter feedline exhibiting extremely low RF
resistance must be used between the KAC 1052 Antenna
Coupler and the antenna.
Typical Shunt Leading Edge Antenna
Grounded transline (transmission line), often referred
to as "towel bar" antennas because their shape
resembles a towel bar, are best suited for helicopter
applications. They can be attached parallel to the
tailboom and fed on the forward end. These antennas
provide minimum drag but suffer from poor efficiencies,
especially at low frequencies. Loss with this type of
antenna can be minimized by observing the following
criteria:
• Space the antenna as far off the airframe as
possible. 18 inches (0.46 m) is preferred, with
spacing of less than 9 inches (23 cm) being
acceptable.
N
Figure 2007
23-10-09
Page 2010
Mar/2003
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