Many, thanks to all who contributed to this thread and who have written
to me personally. I certainly have a lot to think about.
I can see that there is some considerable doubt over the 'ground plane'
theory.
My limited understanding of RF prevents me from contributing anything
meaningful,
other than simply re-iterating what has already been said.
On the one hand, I can't see what's so special about Terra kit as to demand
such
a very special installation.
On the other hand, the installation handbook is pretty specific on this
issue.
However, as has been said, there are a number of potential causes.
The one comment I would re-iterate is that my personal experience of
"selective"
reception of the transmitted signal (not dependant on distance) is one that
is shared
by a number of other Terra customers.
Thanks again,
Alan
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