Specifications

SG-231 MANUAL
SGC Inc. SGC Building, 13737 S.E. 26th St. Bellevue, WA. 98005 USA
© 11/00 SGC, Inc. P.O. Box 3526, 98009 Fax: [phone] Tel: [phone]
E-Mail: [e-mail] Website: www.sgcworld.com
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Figure 4.5.7 Base dipole installation
Coupler
7 to 25 meters
1 meter
3 meters
Hot
GND
E66 insulators
(x8)
3 meters
Base Dipole Installation
RF Cable
Control cable
Figure 4.5.8 Base Quadra Loop Horizontal
Base Quadra
Loop Horizontal
Porcelain
isolators
with tie rope
Ground
bolt
terminal
Antenna
terminal
Radiation
50 ohm
coax from
transmitter
Coupler
The horizontal quad loop is a groundless antenna for high angle radiation and is ideal
for HF communications up to 500 miles in the frequency range of 2 to 10 MHz. This
configuration provides optimum near-right angle reflection to the ionosphere for short-
range communications.
A square base can be from 8 to 15 meters long and can be configured to the shape of the
structure as necessary, to provide the best arrangement. The height of the supporting