Unca Pete wrote:
Ben Tongue's website offers exellent engineering analysis
and practical information on crystal set design:

http://www.bentongue.com/xtalset/xtalset.html

For good practical discussions try TheRadioBoard.com.
Lot's of xtal set experimenters over there to answer
questions...

Pete k1zjh



Was gonna recommend the same. Along the lines of good 'crystal radio'
headphones some of the guys have found some of the little piezo devices
make for a very sensitive, high-impedance DIY headfone project. I think
one of the guys is selling them as a kit, with shooter's muffs included.
Haven't tried them myself but the reports are very favorable.

-Bill