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Date: Fri, 14 Jan 2011 17:36:08 +0100
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From: "Roelof Bakker" <roelof@ndb.demon.nl>
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Subject: Re: LF: Re: Mini-Whip Antenna
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> Hi Roelof,
>
> Some interesting comments there.
>
> On the topic of feeder pick up Alan G3NYK and myself have had many
> conversations over the years about ways to deal with the problem and a
> method we've never got around to trying but I now have some components
> to try (when I get a "roundtooit") is to convert (E/O) electrical to
> optical at the feedpoint and then conduct by fibre through the noise
> field converting back to demodulated baseband in the shack. The problem
> of powering the feedpoint equipment may be overcome by using batteries
> (possibly solar-charged) thus avoiding further noise pick up and
> re-radiation from power source cabling.
>
> 73

Yes, this is an excellent idea and to be honest I have already acquired  
the necessary parts for some time, but have not come round yet to use  
them. An other idea that I have tested and can give excellent results in  
difficult cases is to use CAT5 network cable.
I used rf-isolating transformers at both ends for the signal pair and  
common mode chokes at both ends for the pair carrying power to the antenna.

73,
Roelof, pa0rdt