Crystal radios used to be the “gateway drug” into hobby electronics. Trouble was, there’s only so much one can hope to accomplish with a wire-wrapped oatmeal carton, a safety-pin, and a razor blade.
We like regenerative receivers. They perform well and they are dead simple to create. Example? [Radio abUse] modified a few existing designs and built a one-transistor receiver. Well, one transistor ...
Marked: "Manufactured by / The Radio Shop / 1120 N. Ashland Ave. / Chicago, Ill. / Log Beach, Cal. / Sunnyvale, Cal. / Under Armstrong U.S. Patent / No. 113149". Specimen is a regenerative detector ...
Marked on tube base: "Kellogg S & S Co. / Radio / Chicago". Three tube receiver employing 201-A type tubes (missing from unit.). Circuit is a regenerative detector followed by two AF stages. Tickler ...
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