General Installation Information
The mobile communication tips found below apply to any mobile installation,
not merely to the QMS or other SGC product.
•
For the best performance and radiation, always mount your
antenna system on the highest part of the vehicle. Approximately 3 to
15 dB in radiation performance may be gained in simply re-positioning
your antenna system from a low to a high point.
•
Never use your antenna system while the antenna is reclining
against the body or the roof of the vehicle. In this situation, you may
find your antenna system performance varies from 6 to 15dB making it
difficult or impossible for your coupler to find a proper tuning position.
•
The noise generated in your vehicle can, in some cases, totally
obliterate your receiving signal. A noise blanker cannot eliminate the
noise; it can only help reduce the consequences associated with the
noise generated. It may in some cases give you a clearer signal.
•
The most efficient way to approach a vehicular noise problem is
to eliminate the noise at its source. Upon finding the source, use the
appropriate technique to eliminate the noise, replacing the defective
item if need be. Use only the appropriate filter component to filter out
any noise (before it radiates to your antenna).
•
For the connection to the battery system of your radio, use a
heavy gauge wire (not less than six gauge). Never use your chassis
ground return for your negative line connection.
Doing so will cause you to lose too much in line voltage and
pick up un necessary electrical vehicle noise. Always make a
direct connection from the radio to the battery. Remember
you need as much input power as possible to generate the
most output power possible.
•
If you use your radio system often, you may consider the use of a
small sealed 40 AH gel cell battery, which requires no service, mounted
directly next to your radio. It will provide you the best overall
performance and will eliminate a great deal of electrical noise you
might find in your line.
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
SG-231 Manual
© 2000 SGC Inc
WARNING: If you do not properly and securely attach this unit to
the vehicle and it comes loose, the speed of the vehicle may cause
the unit to injure others.