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Re: LF: New LF grabber for very slow modes up to QRSS 240

from [Stefan Schäfer] [Permanent Link][Original]
To: [email protected]
Subject: Re: LF: New LF grabber for very slow modes up to QRSS 240
From: Stefan Schäfer <[email protected]>
Date: Fri, 03 Sep 2010 09:56:07 +0200
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Hello Horst,
It is a homemade RX that downconverts 137 kHz to 12 kHz by using a BF862, a BF981 and another BF981 at the output. The 125 kHz signal for downconverting is achieved by using a 1 MHz crystal oszillator, divided by 8 by 2 CMOS 4013 stages... If the circuit is finished, i will publish it. But today it works very fine! Yesterday the QRN was high on all grabbers (in DL) ;-) 


73, Stefan

PS: Nw hr qrt, going to France now!

Am 03.09.2010 08:40, schrieb Horst Stöcker:

Hello Stefan

what RX do you use at for your grabber?

Just as a matter of interest.

vy73 Horst DO1KHS/DI2AN
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