Crystal Radio Experimenters Detector Kit
As you can see in the picture\'s you get the Razor blade kit i already offer,
plus Iron Pyrite and Galena, an extra pin for the Galena and Pyrite with
no Pencil lead, and a brass plate to mount the Galena as in the picture.
also 3 diodes to test out, one 1N60,1N34 and a Schottky Diode.
Its interesting to see and hear what the difference is between all
these materials, comparing the stations received and the amount
of audio signal in the headphones.

Thanks for links

To automatically design your coil go a clip i made on how to assemble the razor blade detector go to you web