[NJARC] odd substitute for galena in crystal radio

[Al Klase]

Hi Joe,

Could work. You may have to break or scratch the chip to get to the 
"good stuff." The silicon/metal radio detector was patented in 1906, but 
was pretty quickly passed over for other semiconductor materials, like 
galena (lead sulfide), that work better in practice. You might want to 
bust up a germanium diode or transistor and try that.

See: http://en.wikipedia.org/wiki/Metal%E2%80%93semiconductor_junction

Al

Al Klase – N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/

On 8/4/2014 5:10 PM, Joe Giliberti wrote:
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> _________________________________________________________
> Greetings!
>
> I've been pondering this for a while and am wondering if it would work, and
> if it had been tried before. Could one use a silicon chip, such as what you
> would find inside an old Pentium chip, and use it in a crystal radio in
> place of a piece of galena?
>
> Thanks
> Joe
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