Re: LF: Ferrite RX antennas

[Daniele Tincani <danieletincani@yahoo.com>]

Hello Stefan,

 

probably you already know, the ultralightdx group on yahoo contains many references to a so-called Ferrite Sleeve Loop antenna (FSL) to be used for LW and NDB DXing with tiny (ultralight) receivers. Could it be of some interest for you?

Also found this link about the FSL antenna concept: http://www.gmweb2.net/The%20FS%20Loop.htm

 

Best regards

Daniele

From: Stefan Schäfer <Stefan.Schaefer@iup.uni-heidelberg.de>
To: rsgb_lf_group@blacksheep.org
Sent: Sunday, August 14, 2011 11:09 PM
Subject: LF: Ferrite RX antennas

Hm yes, maybe. But if you are outside in the nature (thinking about a total /p station consisting out of that antenna and a sensitive RX, a netbook running SL and a 70cm handheld TRX, and sitting on a bank watching the sky!) where no man made QRM is and point the antenna to the wanted signal... The DCF77 clock antennas at home are probably often pointing somewhere, rather to the neighbours PC instead to Mainflingen.
And it must be a large rod or probably many of them in parallel and seriell using a LNA as well. Must be separated from the SL running PC.
I assume many have tried this before, most probably some of the reflector members too.

Further comments?

73, Stefan/DK7FC

Am 14.08.2011 21:43, schrieb Minto Witteveen:

I haven’t thought about ferrite RX antenna for LF….My guess is that it is not going to work – not without an external antenna coupled to the ferrite, and then what’s the point?
DCF77 clocks often have trouble locking indoors or in the neighborhood of ‘QRM’ generators like PC’s, and look what power DCF77 is using…
I could be entirely wrong of course…

73’ Minto pa3bca

 

From: Stefan Schäfer

Sent: Sunday, August 14, 2011 20:03

To: rsgb_lf_group@blacksheep.org

Subject: Re: LF: Re: 137 grabbers

 

<snip>
BTW what do you think about a ferrite RX antenna for LF? Now i'm opening an older discussion i expect ;-)

73, Stefan/DK7FC