Return to KLUBNL.PL main page

rsgb_lf_group
[Top] [All Lists]

LF: Ferrite RX antennas

To: _RSGB_LF <[email protected]>
Subject: LF: Ferrite RX antennas
From: Lubos OK2BVG <[email protected]>
Date: Mon, 15 Aug 2011 16:50:23 +0200
Importance: Normal
In-reply-to: <[email protected]>
References: <68BE37BD69E54DEE89CEBA8E30E9B94E@PcMinto> <[email protected]> <3ED8E5422F1F45DBB8186E9D9870AD63@PcMinto> <[email protected]> <938BF599006244949F6CDDB5BA91F347@PcMinto> <[email protected]> <[email protected]> <op.vz74xbyxyzqh0k@pc-roelof>,<[email protected]>
Reply-to: [email protected]
Sender: [email protected]
Hello Stefan, LF!
There is my experimental  long ferrite antenna for 136kHz on the picture:
lenght - 150cm
weight - 16Kg

It was made from 75 ferrite pieces 40x40x20mm (2x E)

73!

Lubos, OK2BVG



Date: Mon, 15 Aug 2011 01:08:27 +0200
From: [email protected]
To: [email protected]
Subject: Re: LF: Ferrite RX antennas

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

Attachment: long_ferrite_ant.JPG
Description: JPEG image

<Prev in Thread] Current Thread [Next in Thread>