Technical information
Table Of Contents
- GoMobile Cover
- SGC – The SSB People
- Go Mobile at 500 Watts
- T a b l e o f C o n t e n t s
- I n t r o d u c t i o n
- C h a p t e r 1 C h a n g e s i n M o b i l e R a d i o
- C h a p t e r 2 O r i e n t i n g Y o u r s e l f t o 5 0 0 W a t t s
- C h a p t e r 3 DCP o w e r S u p p l y S y s t e m f o r a M o b i l e I n s t a l l a t i o n
- C h a p t e r 4 A n t e n n a s a n d G r o u n d s
- C h a p t e r 5 N o i s e S u p p r e s s i o n a n d S h o c k -M o u n t i n g
- C h a p t e r 6 I n s t a l l a t i o n P r o c e d u r e s
- C h a p t e r 7 I n s t a l l a t i o n V a r i a b l e s
- C h a p t e r 8 G o i n g M o b i l e a t 1 5 0 W a t t s
- Appendix A — QMS S y s t e m
- A p p e n d i x B — S e l e c t i o n o f E q u i p m e n t
- A p p e n d i x C — T e s t D a t a
- It all Adds Up
Changes in Mobile Radio
In the early days of radio, mobile radio also had its humble
beginnings. The first mobile radio systems, aboard passen-
ger-carrying ships, used low and medium frequencies, and
the mode was CW (“continuous wave” using Morse code).
Special shore stations installed to handle ship traffic quickly
became an important safety feature, the obvious benefit
being the safety of passengers.
The first land mobile systems were able only to receive.
Around 1920 some police agencies had dispatch systems that
operated around 1600 kilohertz. These early systems were
bulky, heavy, and not very efficient by today’s standards,
but the many benefits of mobile communications helped to
accelerate the radio art.
As a result, today’s systems permit flexible communications
almost anywhere, with installations in just about anything
that moves—automobiles, trucks, even sub-compacts. High
frequency mobile radio, made more effective with the intro-
duction of SGC’s external coupler mount (the QMS system),
allows long distance communication for commercial, industri-
al, military, and scientific organizations as well as the
Amateur Radio Operator— without the need for the expen-
sive repeater systems required for VHF and UHF communi-
cations.
This book will guide you through the installation of your SGC
500-watt mobile system. It also contains information, tech-
niques, and procedures that apply to radio gear from other
manufacturers:
• Chapter 2 helps you to see your vehicle as a site for a
500-watt mobile installation.
2
SGC Inc. SGC Building, 13737 S.E. 26th St. Bellevue, WA. 98005 USA
P.O.Box 3526, 98009 Fax: 425-746-6384 or 746-7173 Tel: 425- 746-6310 or 1-800-259 7331
E-mail: SGCMKTG@aol.com Website: http://www.sgcworld.com
© 1997 SGC Inc.
Chapter 1