[Premium-Rx] Racal 1792 frequency standard

[ToddRoberts2001 at aol.com]

In a message dated 7/14/2005 6:58:17 AM Eastern Standard Time, 
GandalfG8 at aol.com writes:
Hi All

I've just bought a Racal 9420 frequency standard as this is a better spec 
drop in replacement for the 9442 used in the RA1792, RA1794, etc etc.
It turns out though that this one is actually a 9420P, with the P looking to 
be an adhesive letter added to the nornal 9420 label.
Also, my first impression is that it's taller, at 3 3/4 inches, than a 
"normal" 9420 or 9442 but my sets are in storage so can't make a direct comparison 
and might be wrong on that anyway.
Anyone got any idea what the P denotes?, and confirmation on normal height 
would be appreciated too.
regards
Nigel
G8PZR

Uh oh, the original freq standard in the RA1792 is about 2 inches tall. There 
is only room for a can 2-3/8 inches tall under the top cover. It would fit in 
a receiver like the RA6778B/C where there is plenty of room in the chassis 
for a tall can. Don't know what the "P" denotes offhand. 73 Todd WD4NGG.