Specifications

30
An End fed antenna could be very effectively used if a metal cabin structure is
available. Loop antennas have the advantage of not requiring a ground sys-
tem, but are highly directive. Mounting the antenna is relatively simple and
can be mounted on short (18 inches 1/2 inch diameter) plastic plumbing
pipes. In the end fed antenna, it is recommended that the antenna be as long
as possible in an "L" shape configuration, as illustrated in the following dia-
gram.
55..33 AAiirrccrraafftt AAnntteennnnaass
When installed in high performance turboprop or jet aircraft, the Smartuner
will operate well with a shunt-fed antenna. This is generally a 23-foot piece of
metal which mounts on the fuselage of the aircraft and is grounded to the air-
craft at one end. The device looks something like a towel bar on the underside
of the aircraft.
FFiigguurree 55..33..11 AAiirrccrraafftt IInnssttaallllaattiioonn DDeettaaiill::
SGC Inc. SGC Building, 13737 S.E. 26th St. Bellevue, WA 98005 USA
P.O. Box 3526, 98009 Fax: [phone] Tel: [phone] or 1-800-259 7331
E-mail: [e-mail] Web site: http://www.sgcworld.com
© 1998 SGC Inc
SG-235 Manual
Wire antenna
Rotary Aircraft
Strut to space out
antenna with plastic
tubing or fiberglass
rod
Coupler
Isolator
Isolator
Isolator
Wire goes to
the coupler
Wire antenna
Ground
Radio
Aviation
control
head
Coupler
Wire antenna
Fixed Wing Aircraft