Specifications

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SG-105 - Marine and Base station antenna.
This is a 60-foot end-fed long wire type
antenna. SGC Part Number 55-10.
SG-114 - Base station antenna. 200 feet
SGC Part Number 55-14
SG-203 - Marine 28-foot whip antenna.
This antenna is used for most power boat
installations. SGC Part Number 55-23.
SG-303 - High performance 9-foot whip
antenna. This dual element antenna is
designed for severe marine and land mobile
service. SGC Part Number 55-27.
QMS-3 - Quick Mounting System which
houses SG-235 Smartuner and also provides
a sturdy mounting platform for the SG-303
antenna system. Designed for rapid
installations requiring no-holes
installation of high performance HF
antenna system. SGC Part Number 55-48.
The automatic antenna tuner is designed for use with end-fed unbalanced
antennas such as whips and long wires. The radiating portion of the anten-
na is connected directly to the tuner through a high voltage insulator. It is
extremely important that the antenna type, site location and grounding
technique be correctly chosen so that the system will radiate effectively.
Broadband resonant antennas (e.g. log periodic) that cover the full range of
the system may be used with the tuner if desired. Narrow band resonant
antennas, such as dipoles, vee's and inverted vee's may only be used if the
antenna VSWR (including coaxial feeder) is less than, or equal to 3:1 at the
operating frequency.
Note that if a dipole or Vee type antenna; is used, the antenna may be oper-
ated at any frequency within the range of the coupler if each side of the vee
or dipole is 23 feet or longer. In addition, the SG-235 is just as happy feeding
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© 1998 SGC Inc
SG-235 Manual
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