[Hallicrafters] Byron has a Manson, Bob has a different Manson

[ah7i at atl.org]

Bob was told his Manson came from a missle silo but is skeptical.
Byron's Manson needs a R390(A?) to make it work.
Bob's Manson appears to be capable of working without any external help.
But, he doesn't really have a clue what he has, so have a look.

http://www.edebris.com/catalog2/item/1080

and please tell me what you know about it.

It uses vacuum tubes in both units.

73,
-bob
ah7i