Mailing: PO Box 3526, Bellevue, WA 98009
Shipping: 13737 SE 26th St., Bellevue, WA 98005
Toll-Free: 800-259-7331 • Phone 425-746-6310 • Fax: 425-746-6384
www.sgcworld.com • Email: sgc@sgcworld.com
7
2.3 Direct Weather Protection Installations
To protect the unit from direct exposure to sunlight and to prevent
heavy build up of ice, we recommend installing the Smartuner first in
a waterproof case then placing the case under some kind of protective
housing. 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.
3.0 Coupler Configuration
Schematic Q30102900A, pg. 26, sheet 1 of 6, is the schematic dia-
gram of the two basic coupler networks L & PI. Note that the L net-
work as viewed from the generator, may be configured as either “C
in” or “C out,” whichever is required by the load. In either case, the
end of the network containing the shunt C element will be the higher
impedance end of the network.
3.1 Connections to SG-239
Drawing G30102900A, pg. 26, sheet 1 of 6 and pg. 30, sheet 5 of 6,
are the diagrams of the antenna coupler connections. RF input and
ground is applied respectively to terminals “RF in” and GND.” The
DC input is applied with the positive to the “12V” DC terminal and
“GND DC.” The “TND” terminal can be connected to transceiver or
SmartLock. This line cannot be connected to both units simultane-
ously. The Hold/Reset terminal is to be reconnected to the SmartLock
option if used.
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
SG-239 Manual
page 7
Wednesday, October 17, 2001 08:31
Composite
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