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Message-ID: <4B198F49.6020600@yahoo.com>
Date: Fri, 04 Dec 2009 16:38:01 -0600
From: Mike-WE0H <we0h@yahoo.com>
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Subject: Re: LF: Re: Active Antenna Preamp of Bernd/DF8ZR
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Worked here for me.

Mike
WE0H
/16



Tracey Gardner wrote:
> The URL is an invalid one
>  
> Tracey

> 
>     ----- Original Message -----
>     *From:* Stefan Schäfer 
>     Hi Lowfers,
> 
>      
> 
>     Now, Bernd has posted the circuit of his preamp for active antennas:

>     http://www.mydarc.de/df8zr/lf-active-antenna.pdf
> 
>      
> 
>     It’s nothing fundamental new. But it’s just working very fine, with
>     an overvoltage shielded input. DLF (153kHz) gets attenuated by abt
>     40dB, compared to the sigs in the wanted frequency range. Gain is
>     abt 23dB. It was published in summer 2003 in the CQDL…
> 
>      
> 
>     73, Stefan