From: DK7FC <73dk7fc@googlemail.com>
Message-ID: <5431CE67.1010109@gmail.com>
Date: Mon, 06 Oct 2014 01:04:07 +0200
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To: rsgb_lf_group@blacksheep.org
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In-Reply-To: <5431CB8A.4010407@virginbroadband.com.au>
Subject: Re: LF: Re: Schumann in my garden
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Hi Edgar,

Thanks for the comment. Well, i thought there are no unwanted signal 
sources in my garden, not in a radius of 400m. But maybe some HF stuff 
reaches the gate through the air, or some charged humidity. Probably you 
are right. And i can increase the C across drain-source by a factor 10. 
Next version... Hopefully there is good WX tomorrow.

73, Stefan

Am 06.10.2014 00:51, schrieb edgar:
> Hi Stefan,
>
> I suggest that you cover the LPF and FET with a piece of tin to stop 
> any external signals entering the circuit after the LPF.
>
> A thin piece of metal from coffee tin or similar food container can be 
> bent in a U shape to cover the components and then soldered at a few 
> points to the copper ground plane.
>
> Just leave a small clearance holes at the ends for the wires to pass 
> through.
>
> Regards, Edgar
> Moonah, Tasmania.
>
>

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Hi Edgar, <br>
<br>
Thanks for the comment. Well, i thought there are no unwanted signal
sources in my garden, not in a radius of 400m. But maybe some HF stuff
reaches the gate through the air, or some charged humidity. Probably
you are right. And i can increase the C across drain-source by a factor
10. Next version... Hopefully there is good WX tomorrow.<br>
<br>
73, Stefan<br>
<br>
Am 06.10.2014 00:51, schrieb edgar:
<blockquote cite="mid:5431CB8A.4010407@virginbroadband.com.au"
 type="cite">
  <meta content="text/html; charset=ISO-8859-1"
 http-equiv="Content-Type">
  <font face="Arial">Hi Stefan,<br>
  <br>
I suggest that you cover the LPF and FET with a piece of tin to stop
any external signals entering the circuit after the LPF.<br>
  <br>
A thin piece of metal from coffee tin or similar food container can be
bent in a U shape to cover the components and then soldered at a few
points to the copper ground plane.<br>
  <br>
Just leave a small clearance holes at the ends for the wires to pass
through.<br>
  <br>
Regards, Edgar<br>
Moonah, Tasmania.<br>
  <br>
  <br>
  </font> </blockquote>
</body>
</html>

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