Fw: [Boatanchors] SSB adapters

[BILL WINTER]

Subject: Re: [Boatanchors] SSB adapters


does anyone here know something about the GE type 4SR1A1 single sideband selector?
it is evidently the work of Costas  (of Costas loop fame) while he was at GE in the early 50's.
I have the full manual including instructions of how to install it in sp400, bc779, bc1004,
sx28,  rme45, and hq129x. I'm thinking about duplicating it as an interesting project.

Bill K3JPB