Homemade radios

A rather unusual detector radio can be assembled on a 6x2p radio tube.With this radio receiver, it is possible to receive signals from radio stations with amplitude modulation on long,…

During the Second World War, soldiers in Europe used the so-called "trench radio".The radio received this name because of its simplicity of manufacture and soldiers were forbidden to use radios…

What was the very first homemade radio receiver that an amateur radio operator had a few decades ago? That's right-detector.There is no simpler radio receiver than this, just one diode,…