
ensure the gasket which seals the unit is placed properly to maintain water-
tight integrity of the unit.
Although the Smartuner is built very solidly, it is good installation practice
to provide additional protection from the elements.
SGC makes the following recommendations:
1
1..7
7
M
Ma
ar
riin
ne
e M
Mo
ou
un
nttiin
ng
g
The Smartuner should be located inside the house or under the aft lazarette
on a sailboat. On power boats, the coupler may be mounted outside, but an
addition protective housing is recommended. The preferred installation if
vertical is with the standoff insulator pointing upward.
A stuffing gland for the RF and DC cables is provided on the lower edge of the
weather housing, along with a 1/4-20 stainless steel ground stud. The anten-
na connects to the ceramic insulator on the top of the weather housing.
The SG-230 may be mounted in any position including inverted without any
degradation of performance. If the coupler is to be exposed to long periods
of high vibration, such as aboard helicopters or tug boats, installation of the
optional shock mounting is recommended.
1
1..8
8
D
De
es
se
er
rtt a
an
nd
d H
Hiig
gh
h T
Te
em
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er
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ur
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e IIn
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alllla
attiio
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s
The Smartuner may be used in very hot climates on a continuous basis if
some additional protection from direct sunlight is provided. The best pro-
tection for a mobile installation is provided by the QMS (Quick Mounting
S y s t e m ) w h i c h k e e p s t h e a n t e n n a c o u p l e r o u t s i d e o f a v e h i c l e .
Temperatures inside a vehicle may exceed 212 degrees F (100 C). If a QMS is
not used, it is very desirable to keep the coupler in the shade if possible.
Please refer to the diagram in the following section.
1
1..9
9 E
Ex
xttr
re
em
me
elly
y C
Co
olld
d T
Te
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Your Smartuner will operate down to specified temperatures. We recom-
mend placing the Smartuner under some kind of housing other than the
case to prevent heavy build up of ice. If you are mounting on a tower in a
hot or cold climate, placing a plastic wastebasket (such as those made by
Rubbermaidª) are excellent weather covers and cost only a few dollars.
13
© 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