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
Yaesu switch: The Yaesu FT-900 requires that a small switch
(accessible through its bottom cover) be thrown to bring the
relay contacts in line with the rear-panel TX GND jack. (In
this rig, the PTT jack keys the transmitter rather than pro-
viding signaling info—so, use the TX GND jack).
Check in the documentation supplied with each rig for the
proper terminals, connections or settings to use for connec-
tion to a linear amplifier.
Used with SG-235 and SG-500. When using a transceiver
with the SG-235 antenna coupler and the SG-500 Powercube,
the amplifier is keyed from the transceiver via the SG-235
coupler using a dedicated control (PTT) line. This keeps the
amplifier in line as long as the PTT is pressed, so that RF
sensing is not lost between voice “peaks” during SSB opera-
tion.
From the SG-235 coupler, the gray wire (PTT output) con-
nects to terminal labeled PTT on the SG-500 front panel. The
brown wire (PTT input) connects to the appropriate terminal
available on your transceiver rear panel (this may be labeled
TX GND or PTT OUT on some transceivers—check with their
supplied documentation).
Used without SG-235. If you are not using the SG-235 in
your installation, the keying line should run directly from the
transceiver to the PTT terminal on the SG-500 front panel
jack.
Power Control. Most amateur transceivers provide a front-
panel variable TX POWER control that permits adjusting
transmitter RF output from approximately 5 watts to 100
watts carrier.
Tune with amplifier off: With the SG-500 switched off, tune
to each of the amateur bands, select CW or AM mode, and
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© 1997 SGC Inc.