How to Build an FM Transmitter From a Clock Radio (back by popular demand)
Автор: Mark Stafford
Загружено: 2013-12-29
Просмотров: 33565
Описание: I posted how to do this in 2003/04, and took it down because it was very long and I had to shoot it myself, which is hard to do if you need both hands free. Hopefully this one goes over better. I first did this as a science project in 1985. It can be done with tube type Fm radios with distances of around 2 to 2.5 miles. Every radio yields different results, but the older and cheaper stuff works best because the components tend to be leaky.This project demonstrates what we call reversibility in nature. For example a speaker can also be a microphone and vise versa. Also there are elements of ganged capacitance, mutual inductance, and resonant tuned circuits. There's actually a lot going on here. The Professor could have done this on Gilligans Island :)
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