[R-390] Need info: Projects Unlimited WWV Standard Frequency Calibrator

[Mort Denison]

Hi Folks,

I recently got this WWV receiver made by Projects Unlimited in Dayton, OH.
They're still in business but have no information on this oldie.  The front
panel is labeled 'WWV Standard Frequency Calibrator'.  It looks like it was
manufactured under USAF government contract.  It receives WWV on 5 Mhz & 10
Mhz.  I would guess the vintage as 1950's based on the tubes used, including
a 6E5 eye tube, for an 11 tube count.

The model/part number is P-1375

Stock No: 7CAC-6625-694-8991

Contract No: AF33(604)23540 

It works but I'm in need of a schematic and, hopefully, an
operator/maintenance manual as I'm going to have to replace the original
capacitors and align the receiver.

Thanks,

Mort Denison

York, PA