On Mon, 7 Jun 2021 08:29:58 +0100, "Brian Gaff \(Sofa\)"
wrote:

Well, Its a bit like a telescope mount but only able to look at the plane of
the ecliptic at the correct elevation.

Yeah, I think they are also called polar mounts, slightly different to
an astronomical equatorial mount.

I often wondered if some kind of omni
directional pirate could be set up on a tall building so pointing the dish
at it would pick it up?

If the transmitter was powerful enough I guess but the dishes normally
work on a fairly narrow beam and I'm not sure there would be many
instances where a building would be tall enough and have dishes
already pointing at it. ;-)

Cheers, T i m