[Milsurplus] USN: ARB receiver used with GP-7 transmitter?

[Jack Antonio]

Hi Mike and the Group

I have a photocopy of a Navy document, which states that
it is taken from a "Bureau of Aeronautics list as published in 1942."
The back page has a handwritten notation that it is an
"Appendix from "Aircraft Radio"
Naval Air (something I can't make out) Mare Island
(something else I cant read).

Here is what the list shows....

The GP series almost always is paired off with some version of the RU.
For example, the TBD-1 (Devastator) shows a GP-3 paired with
and RU-5 and RU-6.

The ARB is paired with the ATB only for the F6F and F7F, everywhere
else shows it paired with an ATD. No mention of the ATC.

The SBD-3 shows a GP-7 paired with an RU-19. The  R4D-3 shows
a GP-7 paired with an RA-18, but could this be a typo, should it
be RA-1B or RU-18??? Did the GP-7 come in a 14 volt version?

Transports seem to have mostly Bendix gear, mostly RTA-1 or TA-2/RA-1 combinations.
The R4D-1 (C-47) shows an SCR-183 and SCR-187 but the later version show
Bendix

RAX-1 shows up in PBB-1, PBM-3 and -4, and PB2Y-3
and -4 and JR2S-1

Couple of other interesting things:

The JRF-1 shows a GP-3 and RU-6 and also something
called a GQ for both transmitter and receiver. Anyone
know what a GQ is? What was the JRF-1? Was this the
Goose or one of the famous Grumman twin engine amphibs?

The XPB2Y-1 and XPBS-1 show a GN/RAM combination.
Anyone know what this is?

Jack

Jack Antonio WA7DIA
scr287 at sbcglobal.net




----- Original Message ----- 
From: "Mike Morrow" <kk5f at earthlink.net>
To: "Milsurplus" <milsurplus at mailman.qth.net>
Sent: Sunday, August 01, 2004 10:27 AM
Subject: [Milsurplus] USN: ARB receiver used with GP-7 transmitter?


> I have seen a number of pictures of WWII MF/HF GP-7 transmitters installed
> with some model of the RU as the associated receiver.  I suppose the RAX was
> another likely candidate too, but I don't think I've seen any photos of
> that.
> 
> Once the ARB was deployed, that seems to me to have been a much better and
> more compact receiver for a GP-7.  But, I've never seen any photos or other
> documentation showing that the GP-7 and ARB combo was ever actually used
> together in USN aircraft.
> 
> Has any one on the list come across anything that would show an instance of
> the GP-7 being used with a ARB, or conversely, could speculate on why such a
> combo would not have been used?
> 
> Thanks and 73,
> Mike / KK5F
> 
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