A.
If a flag pole is made of PVC pipe, it is easy to tape a large gauge wire to
the inside of the pipe and use a good counterpoise. Typical flag poles
are 25 to 35 feet in height and offer excellent performance on all bands.
B.
The down spout, rain gutter antenna works well if the piping and gutter
are aluminum. You may wish to secure the joints with hose clamps or
plumbers tape to assure low resistance connections.
C.
Masonry chimneys are visually "busy". You can run a #10 copper wire
parallel to the chimney with little risk of detection. Some short stand
offs and you have a support for a vertical dipole type antenna.
D.
The Inverted "L" antenna may work slightly better if it is installed clear
of a building, but for covert operations, this type of installation is a
favorite. Especially if the feedpoint is at ground level adjacent to an
iron or copper water line entering the house which will provide an
excellent counterpoise.
E.
Along the edge of the roof, held off by some inexpensive TV twinlead
stand offs, you can hide 25 to 40 feet of antenna on virtually any house.
F.
Under the roof overhang, all kinds of wire antennas may be installed.
G.
Loop antennas installed on the inside or outside wall work well at
higher frequencies and provide some directional characteristics. These
antennas are also less prone to man made noise.
H.
All types of antennas may be hidden inside the roof of a building which
uses non-metallic roofing materials.
31
© 1998 SGC Inc
SG-230 Manual
SGC Inc. SGC Building, 13737 S.E. 26th St. Bellevue, WA 98005 USA
P.O. Box 3526, 98009 Fax: 425-746-6384 Tel: 425- 746-6310 or 1-800-259 7331
E-mail: [email protected] Web site: http://www.sgcworld.com
At least three ground radials
longer than the flag pole
Coupler
B
C
D
COUPLER
COUPLER
COUPLER