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Re: LF: Re: Active Antenna Preamp of Bernd/DF8ZR

from [Mike-WE0H] [Permanent Link][Original]
To: [email protected]
Subject: Re: LF: Re: Active Antenna Preamp of Bernd/DF8ZR
From: Mike-WE0H <[email protected]>
Date: Fri, 04 Dec 2009 16:38:01 -0600
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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
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