[ARC5] R-20/ARC-5

[gordon white]

I have an R-20/ARC-5, 1.5 - 3 mc, serial # looks like a "7" but may not 
be. Hard to read. It was made on contract NOs-74912 and carries A.R.C. # 
5005 on the back. No date.  This came out of the  "morgue" in Boonton 
and carries the circled "M" stamp as well as R-20 in yellow ink on the 
front. It has a 12K8, three 12SK7s , one 12SR7 and a 12A6 audio tube. 
(The tube enclosure is labeled "12SF7" next to one of the  installed 
12SK7s.) All of the tubes have their identification numbers stamped on 
the top except the 12K8.

- Gordon White