Message-ID: <4E48556B.7030906@iup.uni-heidelberg.de>
Date: Mon, 15 Aug 2011 01:08:27 +0200
From: =?UTF-8?B?U3RlZmFuIFNjaMOkZmVy?= <Stefan.Schaefer@iup.uni-heidelberg.de>
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3
MIME-Version: 1.0
To: rsgb_lf_group@blacksheep.org
References: <68BE37BD69E54DEE89CEBA8E30E9B94E@PcMinto> <4E47FFE9.10100@iup.uni-heidelberg.de> <3ED8E5422F1F45DBB8186E9D9870AD63@PcMinto> <4E480E02.9020706@iup.uni-heidelberg.de> <938BF599006244949F6CDDB5BA91F347@PcMinto> <4E482FBD.7030402@freenet.de> <4E484183.9090805@iup.uni-heidelberg.de> <op.vz74xbyxyzqh0k@pc-roelof>
In-Reply-To: <op.vz74xbyxyzqh0k@pc-roelof>
Subject: Re: LF: Ferrite RX antennas
Content-Type: multipart/alternative;
 boundary="------------000004080201010802060203"
Sender: owner-rsgb_lf_group@blacksheep.org
Precedence: bulk
Reply-To: rsgb_lf_group@blacksheep.org
X-AOL-SCOLL-URL_COUNT: 0  
x-aol-sid: 3039ac1d41194e4856797cbd
X-AOL-IP: 195.171.43.25
X-AOL-SPF: domain : blacksheep.org SPF : none


This is a multi-part message in MIME format.
--------------000004080201010802060203
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit

Interesting!

Can anyone of the experts comment on this concept?

After scrolling down through pages of text i just found a few photos. 
The mechanical concept is clear.
But the author appears almost esoteric to me, like a guru of that 
antenna,  "_*The best compact AM antenna in the world - ever!"

*_So it is said that 20 ferrite rods in that arrangement perform 20 dB 
better than a single rod. OK, but how well performs such a signgle rod? 
20 dB is maybe not enough, compared to a well designed single turn loop, 
which i have now.  My goal is always LF/137, not MF BCD stations or so. 
The advantage of the ferrite solution, if sensitivity is sufficient to 
be well above the noise on a quiet day, would be to be completely free 
in all /p sesions (without a car).

Would it be possible to reasonable simulate that antenna (not an 
accurate model but rather an estimation)?

73, Stefan/DK7FC


_*
*_Am 15.08.2011 00:04, schrieb Roelof Bakker:
> Hello all,
>
> If you have time to read it all, this might be interesting:
>
> http://www.gmweb2.net/The%20FS%20Loop.htm
>
> or Google for Ferrite Sleeve Loop.
>
> 73,
> Roelof, pa0rdt

--------------000004080201010802060203
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable
X-MIME-Autoconverted: from 8bit to quoted-printable by relay.uni-heidelberg.de id p7ENBgn1032043

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
  <meta content=3D"text/html; charset=3DUTF-8" http-equiv=3D"Content-Type=
">
</head>
<body bgcolor=3D"#ffffff" text=3D"#000000">
Interesting!<br>
<br>
Can anyone of the experts comment on this concept?<br>
<br>
After scrolling down through pages of text i just found a few photos.
The mechanical concept is clear.<br>
But the author appears almost esoteric to me, like a guru of that
antenna,=C2=A0 "<font><u><b>The best compact AM antenna in the world - ev=
er!"<br>
<br>
</b></u></font>So it is said that 20 ferrite rods in that arrangement
perform 20 dB better than a single rod. OK, but how well performs such
a signgle rod? 20 dB is maybe not enough, compared to a well designed
single turn loop, which i have now.=C2=A0 My goal is always LF/137, not M=
F
BCD stations or so. The advantage of the ferrite solution, if
sensitivity is sufficient to be well above the noise on a quiet day,
would be to be completely free in all /p sesions (without a car).<br>
<br>
Would it be possible to reasonable simulate that antenna (not an
accurate model but rather an estimation)?<br>
<br>
73, Stefan/DK7FC<br>
<br>
<br>
<font><u><b><br>
</b></u></font>Am 15.08.2011 00:04, schrieb Roelof Bakker:
<blockquote cite=3D"mid:op.vz74xbyxyzqh0k@pc-roelof" type=3D"cite">Hello
all,
  <br>
  <br>
If you have time to read it all, this might be interesting:
  <br>
  <br>
<a class=3D"moz-txt-link-freetext" href=3D"http://www.gmweb2.net/The%20FS=
%20Loop.htm">http://www.gmweb2.net/The%20FS%20Loop.htm</a>
  <br>
  <br>
or Google for Ferrite Sleeve Loop.
  <br>
  <br>
73,
  <br>
Roelof, pa0rdt
  <br>
</blockquote>
</body>
</html>

--------------000004080201010802060203--