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
coil to the center conductor of the distributor.
Solutions for Electrical Noise
Install the antenna system as far away from the engine
compartment as possible. (We recommend the QMS—see
Chapter 4 and Appendix A. Not only does it keep the cou-
pler-to-antenna wiring as short as possible, it also puts
another layer of metal between the noisy engine and the
antenna base.)
Engine noise. Engine noise can be suppressed with capaci-
tance and shielding.
Capacitance: Apply electrical capacitance. Capacitors will
bypass spikes of electricity, such as those pulses which run
from the spark plug to ground.
Small capacitors are fine; however, if you add too much
capacitance to ground, you will flatten the ignition spike and
reduce the intensity of the spark. The arrival time of the
spark will also be delayed because the capacitor that you
use will slow the rise time of the spark pulse.
With too much capacitance, the spark voltage may drop from
20,000 volts to 5,000 volts, not enough to cause a spark in
the engine. Therefore, put a capacitor of .01 micro Farad
only on the primary side of the ignition coil.
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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
Trouble-shooting Ignition Wiring
Invest in a small inexpensive AM radio. Tune it to
the high end of the broadcast band (1610 KHz)
and turn up the volume.As you get the radio near
the ignition wiring, you will notice a marked
increase in spark plug noise. Isolating the prob-
lem is the first step toward resolving a noisy
engine.