"Dale Parfitt" wrote in
:

Here's a pix of a 1 tube (actually 3 in 1) compactron) RX that I
built
form a Pop Electronics aarticle. There are links on the WEB if you
type in "6AF11 regen" to your search engine.
http://parelectronics.com/pics/regen2.jpg

There is only one site that search finds, which reproduces the article, but
no schematic!

http://home.gwi.net/~jdebell/pe/1963/PE63JanP39.htm