[Milsurplus] "Rare" Gear

[WA5CAB at cs.com]

Bit of trivia.  

Actually, it's GP-6A, 
Serial Number 1 to 700
GP-6,
Serial Number 701 to 1987
 and GP-7.
Serial Number 1 to ????

Using organizations having sets S/N 1 to 700 were instructed to stamp a 
letter "A" on the nameplate after the "6".  My guess is that most didn't 
bother.  The difference was that S/N 1 to 700 had a 4-pin power connector and 701 
up had 6 pins..  The two control boxes were also different mechanically but 
the same electrically.  So the Navy Type Number was not changed.  Why they 
didn't call the later ones GP-6A the manual doesn't explain.  But my guess is 
that Westinghouse had already bought all of the nameplates and didn't want 
to spend the money to make new ones.

Robert Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480

In a message dated 08/07/2016 14:45:56 PM Central Daylight Time, 
scr287 at att.net writes: 
> A few differences between the GP-3 and the later GP-6 or 7. Slightly
> different front panel layout, different parts layout internally, and the
> tuning units are not interchangeable between the earlier and later sets.
> I have no documentation on the GP-3, so can't comment on any
> circuit differences.
> 
> Jack Antonio WA7DIA/4
> 
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