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From: "James Moritz" <james.moritz@btopenworld.com>
To: <rsgb_lf_group@blacksheep.org>
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Date: Tue, 30 Aug 2011 20:09:37 +0100
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Subject: Re: LF: Ferrite rod antenna - on-air testing
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Dear Stefan, Mal, LF Group,

Thanks for the QSOs earler this evening. DK7FC/P varied between RST349 and 
559, and was generally a good readable signal on the ferrite rod antenna. 
The background noise level seemed to be slightly higher than during previous 
tests at the HF end of the band, and I found experimentally afterwards that 
there appeared to be some feeder-borne noise that could be reduced by around 
5dB by connecting an isolating transformer into the ferrite rod coax. When 
this was done, the band noise appeared to be exceptionally low, and there 
was no noticeable difference in the noise floor between  the ferrite rod and 
larger antennas. Stefan's /P receive setup is clearly a viable one if 
effective portable antennas are available, and an interesting solution to RX 
noise problems - especially when the weather is nice!

Cheers, Jim Moritz
73 de M0BMU