On Sun, 16 Feb 2020 22:39:18 -0000, alan_m wrote:

On 16/02/2020 19:37, Brian Gaff (Sofa 2) wrote:
You should only need two for all channels since there are only two possible
polarisations surely?

It's only sky that needs two cables. Other wideband (unicable) LNBs
connected to the appropriate tuners only require a single cable, and the
signal can be split.

How do they put H and V polarized channels onto the same cable?

https://www.inverto.tv/lnb/186/progr...lnb-with-24-ub

Because these unicable LNBs don't steal the DAB/UHF frequencies it's

It's not stealing, it's making use of them.

possible to combine the signals from terrestrial and satellite in the same cable.

Why on earth would you want to do that? I have an aerial and a Sky dish, I have a cable from each. I'd never have thought of trying to cram both signals onto one, then trying to split them at the other end. Sounds like a lot of hassle to me.

The cynic in me says Sky have adopted a bespoke system to tie people
into their Q service. Its no longer just a matter of swapping out a box
at the end of the cable as can be done with a "traditional" LNB.

If I wanted to stop Sky, I'd just change the LNB back to whatever was needed by the new service.