Marked: "Oriole Jr. / Trinum Circuit". On plate: ORIOLE Receiver / Model 90 / Serial 402 / Warning: Trinum Circuit Used in this receiver is patented and infringement will be prosecuted / W-K Electric ...
There are many ways to build a radio receiver, but most have a few things in common, such as oscillators, tuned circuits, detectors, mixers, and amplifiers. Put those together in the right order and ...
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