Artikelrobot
Well-Known Member
The Yeovil Amateur Radio Club recently put on a crystal set evening to mark the start of the centenary year (2006) of the invention of the crystal diode detector, a device that revolutionised amateur radio in the years before World War One
http://www.southgatearc.org/news/january2006/crystal_diode.htm
http://www.southgatearc.org/news/january2006/crystal_diode.htm