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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1.6.1 Marine Mounting
The Smartuner should be located inside the house or under the aft lazaret on a sailboat.
On powerboats, the coupler may be mounted outside, but an additional protective
housing is recommended. The preferred installation if vertical is with the RF screw
pointing upward.
RF and DC cables are provided for on the lower edge of the weather housing, along
with a 1/4-20 stainless steel ground stud. The antenna connects to the screw on the top
of the weather housing.
The SG-231 may be mounted in any position including inverted without any
degradation of performance.
1.6.2 Desert and High Temperature Installations
The Smartuner may be used in very hot climates on a continuous basis if some
additional protection from direct sunlight is provided. The best protection for a mobile
installation is provided by the QMS (Quick Mounting System) that keeps the antenna
coupler outside of a vehicle. Temperatures inside a vehicle may exceed 212°F (100°C).
If a QMS is not used, it is desirable to keep the coupler in the shade if possible. Please
refer to the diagram in the following section.
1.6.3 Direct Weather Protection Installations
We recommend placing the Smartuner under some kind of protective housing other
than having the case directly exposed to sunlight and to prevent heavy build up of ice.
If you are mounting it on a tower in a hot or cold climate, a plastic wastebasket (such as
those made by Rubbermaid™) makes an excellent weather cover and costs only a few
dollars.
Figure 1.6.3.1 Direct Weather Protection
Smartuner mounted inside a plastic waste
basket to protect it from extreme heat and
heavy icing. This type of enclosure is widely
available in all countries.
Long wire antenna