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LF: Active Antenna Preamp of Bernd/DF8ZR

from [Stefan Schäfer] [Permanent Link][Original]
To: <[email protected]>
Subject: LF: Active Antenna Preamp of Bernd/DF8ZR
From: Stefan Schäfer <[email protected]>
Date: Fri, 4 Dec 2009 18:51:24 +0100
In-reply-to: <38A51B74B884D74083D7950AD0DD85E828AB3E@File-Server-HST.hst.e-technik.tu-darmstadt.de>
Reply-to: [email protected]
Sender: [email protected]
Thread-index: Acp0u1rPAGcNDuTGSSu7cfOACu+G0AAJXlNQAAoxQWA=
Thread-topic: LF: Active Antenna Preamp of Bernd/DF8ZR

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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