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
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