farzad Beheshti wrote:
I want to make a simple radio (receiver), without using any IC and by
capacitor, inductor, transistor, diode and other simple electrical
device.
Would you mind telling me how can I do that. Have you any reference
or do you know any website or group to help me?

Thank you.

For a diode, you may wish to 1st start with the venerable 1N34A
germanium diode. Once you have the other circuit components working
the way you wish, you could step back in history then, and go with the
cat whisker detector.

http://www.1n34a.com/parts.htm#diodes

http://en.wikipedia.org/wiki/Cat%27s-whisker_detector

Google "crystal radio sets" for lots more.

--
1PW