[Premium-Rx] Wellbrook excellence !

[Al Klase]

Alberto and the Group,

I too am an antenna experimenter, and one time manufacturer.  I don't at 
all blame Well brook for protecting their intellectual property, I 
potted the magic bits of the antenna I sold years ago.  Anyway, to make 
a loop work without tuning it to a specific incoming signal, you 
probably need a "tranimpedance" amplifier that converts the current in 
the loop to voltage on the output.  Such a device will have a very low 
input impedance, like for instance, the summing junction (- input) of an 
op amp.  See:  http://www.vlf.it/lowfloop/lowfloop.htm  Problem is, it's 
difficult to get this working above MF.  I don't think the Dallas 
Langford circuit is applicable here.  If anybody has any ideas, let's 
hear them.  Loop antennas have a lot to offer, especially if we don't 
have to retune when we change frequency.

Regards,
Al

Ken chattenton wrote:

>HI Alberto, all from Ken in the UK,
>
>The number of times I have heard similar comments to yours Alberto regards 
>duplicating the amp.
>I know it would be nice to do, but I'm afraid there's no chance really.
>Guy protects this little unit by 'potting' it in compound ( plastic conduit 
>box ) and he will not release the circuit dia to anyone, and why should he 
>after all the research and work he has expanded in it's design.
>I have never heard anyone complain about the products and support offered by 
>Guy. A truly professional in every way.
>
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>> I know that I am asking almost the impossible. 
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-- 
Al Klase - N3FRQ
Flemington, NJ
http://www.skywaves.ar88.net/