Art Unwin wrote:
I have on order a tilting system for my antenna to probe the
polarisation of incoming signals
for maximum audio clarity and gain.
There are instruments out there that can automatically tell you the
polarisation
without one taking the trouble to pan the antenna in different
directions.

Never saw one that didn't need an antenna capable of being switched
(either electronically or machanically) beween different polarizations.
Which instrument did you see?

Alan