Radio Builders
Radio Discussion => Technical Corner => Topic started by: radionortheast on August 22, 2026, 10:07:25 am
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I used to have one of those electronics kits from the science musume, i’ve been trying to find the circuit, they used 1 transistor, its one of the earliest things I would play about with. I found a circuit here, it looks simliar the ones I had i’m pretty sure they used a little audio transformer, I guess its abit different. Apparently these circuits aren’t the best they maybe have fm modulation aswell as am, I don’t know how they would sound on a radio with digital tunning. But i’m pretty sure I used to tune to 200 in 1, on a pocket radio, all the pocket radios had digital tunning.
I did find it pretty funny on here it is listed as the radio station :o in the science museum one I think it was called the am or mw broadcast station, I’d spend many hours listening to music through these things, glow worm, 2unlimited all 90’s euro dance, i’d butched a 3.5mm headphones jack, to get it to connect to my boombox, before music could be only played through the speaker, which acted as a microphone which wasn't as good. It was how you’d tune these things is you’d put your radio close to the speaker, when you heard a squeel you would be tuned to the transmitter.
https://www.scribd.com/document/372367099/Electronics-Lab-30-in-1-Velleman#page=40