This is the most simple fm receiver with good performances that works great even if the sensitivity is not too high. The working principle of this radio receiver may seem a little unusual. It is made ...

A simple fm radio transmitter circuit which covers frequencies from 88 to 108 MHz. It is built with 3 transistors: BC109, BFR91A and BFR96S. It is quite stable and the output power is around 200 mW.

Making your own FM radio is practically a rite of passage for hackers. How about making a small FM transmitter? Originally designed by the Japanese multimedia artist [Tetsuo Kogawa], this simple FM… ...

A simple v.h.f. f.m. receiver chassis is described with a view to showing that it is possible to employ quite simple circuits and cheap components and construction and yet abstain satisfactory ...

[Sean Michael Ragan] built this FM transmitter which shows off its circuitry via a clear plastic dome. The device is electrically identical to one we looked at in September. That version championed… ...

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Even better, the sensors that harvest the energy are simple to make. To print the circuits on paper or paper-like polymers, the researchers use an inkjet printer and add an emulsion of nanoparticles.