[ARC5] [Milsurplus] FWIW: RU, RU/GF, and RAJ Receiver Coil Set Range Letter Designations

[Mike Morrow]

I wrote:

>> The coil sets above will not work in these receivers:
>> CBY-46064  - RU-8/GF-6, RU-9/GF-7, RU-15/GF-10

Dave wrote:

> I have the RU-15/GF-10 Naval Auxilary set.
> As a clarification: the majority of the other 
> coils will "play" in the receiver, but the 
> marked tuning range will not be correct.

It would be an accurate generalization to say that any RU coil set made after 1933 will work in a fashion in any RU or RAJ made after 1933.  I figured I was pushing the tolerence of the list with postings not related to putting gear on the air, so I skipped a few details. I couldn't resist, since some RU discussions had started on the milsurplus list.  :-)

Your GF-10/RU-15 may have "sole survivor" status.  I'm sure there are very very few surviving CBY-46064 receivers anywhere in the world.  Have you the rare Zx-range coil sets?  I think the USN Reserve GF-6/RU-8, GF-7/RU-9, and GF-10/RU-15 sets were made in very small quantities.  IIRC, the GF-6/RU-8 instruction book indicates 40 of that set were made...fewer than the RAV units.  You have a treasure with your GF-10/RU-15...also the last GF/RU set made by A.R.C.

73,
Mike / KK5F