[Hallicrafters] Transistors

[Duane Fischer, W8DBF]

Hi David,

Hey you rascal, I am still waiting for that QSL you promised me last year 
for our very enjoyable, but all too brief, QSO.

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?

Why, I wonder, did all of these people talk about the Germanium diode when 
it was Galena? Just mistaken or is there some piece of the radio lore jig 
saw puzzle missing?

----- Original Message ----- 
From: "David C. Hallam" <dhallam at rapidsys.com>
To: "Carl" <km1h at jeremy.mv.com>
Cc: <hallicrafters at mailman.qth.net>; "TC Dailey" <daileyservices at qwest.net>
Sent: Wednesday, June 03, 2009 2:38 PM
Subject: Re: [Hallicrafters] Transistors


I don't know about new crystal radio sets given the scare tactics about
lead in recent times, but the old standby for a crystal was lead sulfide
aka Galena.

David
KC2JD/4

Carl wrote:
> Ive always heard it was a standard old germanium or other bipolar found in
> crystal set parts that had an impurity besides the one needed.
>
> Carl
> KM1H
>
>
> ----- Original Message ----- 
> From: "TC Dailey" <daileyservices at qwest.net>
> To: <hallicrafters at mailman.qth.net>
> Sent: Wednesday, June 03, 2009 1:32 PM
> Subject: [Hallicrafters] Transistors
>
>
> The day is not wasted - I learned something. (FET)
>
> Tom - WØEAJ
>
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