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 ...

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.

I recently did a very popular post about Ron Quan’s regenerative radio. Ron was nice enough to send me the schematic. I also added it as an update to the original blog, but I figured you would want me ...

From the receiving side of the circuit, the antenna was made of random wire coupled with the inductor L1 having a single turn while inductor L2 has 4 turns wound around a 35 mm film container. Both ...

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 ...

Sixty-one years ago, on January 31, 1954, Edwin Armstrong, who invented the regenerative, super regenerative, and superheterodyne detector circuits for continuous-wave and amplitude modulation and the ...