[Milsurplus] WWII U.S. Navy Oxford Tartak Model N3B Receiver

David Stinson arc5 at ix.netcom.com
Thu Dec 27 17:45:27 EST 2012


Re:
WWII U.S. Navy Oxford Tartak Model N3B Receiver 

I recently received this radio through the kindness 
of one of our good members, and it's a pretty little set.
Photos, which don't do it justice,
I've shamelessly (but with thanks) cribbed from:
http://k4che.com/Oxford%20Tartak/DSCF0009%20(2).JPG
http://k4che.com/Oxford%20Tartak/DSCF0008%20(2).JPG

On the slight chance that one of you has this unusual and
interesting receiver on a shelf and wants to get it running,
write me.  I've just resurrected one and can likely save you
some head-scratching.  It's a  "not-quite-a-clone" of the 
RCA AVR-20 receiver.  The front panel graphics
and Volume / LO source knobs are clearly derived 
from RCA AVR and SCR-288 patterns.
Tuning knob in the photo is unoriginal, but wear patterns
indicate the same knob as used on the AVR-20
and I've so replaced it.
LO wiring and RF Amp tube type are different,
as is the power distribution and 6-Volt-only fil. wiring.
Three cap replacements, repair of the LO coil 
and tracing the weird power distribution and it's playing fine
on about 150 VDC B+.  
I'm thinking of pairing it either with an RCA AVT-111
(not the -112; the earlier -111) or with one of 
the little Ranger or Lear transmitters, which might 
be more interesting.
If anyone wants more details on the set
and it's resurrection, please write.

And has anyone ever heard of Oxford Tartak?

73 DE Dave AB5S


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