[Hallicrafters] Transistors

[lrlayton at cox.net]

I'm not sure of the physics involved, but GI's during WW2 made foxhole radios that used an old  razor blade and a piece of pencil lead (graphite) as a detector.

Les Layton


---- "Duane Fischer wrote: 

> 
> I always heard people talking about Germanium diodes. Especially concerning 
> crystal radio sets. Was there anything else used for the cat whisker and 
> chunk of crystal other then Galena?
> 
>