KA6PNL wrote:

Hi I have a friend that son wants to build a crystal radio. I seam to
remember that we grew our own crystal back in the early 60 any help?? Also
where can I find a 1n34 quick have 2 weeks for his science fair.


A silicon diode will work, it won't be as sensitive but you can get one
at the local Radio Shack (they carry germanium diodes off and on, so
they may have some).

If you're using germanium diodes get some spares -- I've found them very
susceptible to lightning strikes, at least in the circuit that my son
and I built.

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com