|Antique-style crystal radio kit.|
Heathkit may be out of business but you can still get old and old-style crystal radio kits from www.xtalman.com. I put this one together with my six-year-old: Can you tell? Crystal radios use germanium diodes because they have a lower voltage drop than silicon, and are therefore more sensitive to weak radio signals.
Source: Borden Radio Company
Contributor: Theodore Gray
Acquired: 18 April, 2003
Text Updated: 11 August, 2007