Ah!
Crystal sets! More of the joy of analog....
Doc,
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Rik Strobbe
Sent: Tuesday, January 06, 2009 15:54
To: [email protected]
Subject: Re: LF: Razor blade RX
Mal,
I did build a "crystal radio" with a razor blade as detector when I
was 14 years old.
It had to be rusty to work properly and even then it was a very poor
detector.
And it is an AM detector, so not useable for ham signals on 500kHz.
73, Rik ON7YD - OR7T
Quoting mal hamilton <[email protected]>:
> Since I mentioned a Razor blade and fence wire RX a while back I
> have had several requests for a circuit. To give others the
> opportunity to submit a cct I will await replies. This method was
> used successfully at Coldiz and other POW camps to receive BBC
> broadcasts.
> Let us know how you would approach the subject. This is applicable
> to MF/LF since the broadcasts at the time were receicved on these
> bands.
> Build one and have a QSO using this RX
> g3kev
>
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