On Sun, 16 Feb 2020 20:21:03 -0000, Rod Speed wrote:

Commander Kinsey wrote

If Sky have use of the TV band, and so do terrestrial transmitters, I
don't see why they don't interfere.

You can't have two things on the same frequency.

You can actually, particularly with satellites where
you point the dish at the satellite you want to use.

Except in this case one of the two things isn't a satellite but is floating around everywhere, it's surprising the dish doesn't pick that up.

Assuming it doesn't, how come we haven't always been duplicating use of the UHF band like this?

On Sun, 16 Feb 2020 19:44:13 -0000, Brian Gaff (Sofa 2)
wrote:

I think more to the point is close in where people want to use both,
nasty
sprogs and crossmod effects should wreak havoc, but seemingly do not, so
I
guess they rely on the robust error checking of the digital systems. I
have
a receiver that can cover from the top of dab to 2 gig, but surely this
also
has the military air band in it?
Brian