progdvb.com

One cool feature of my old satellite receiver was a channel scan function. You could add channels to a list then it would tune to each of them in turn for a few seconds. Just the ticket if you’re a channel hopper like me.

I am not good undarstand this. What you mean?

Programmable auto zapping over user selected stations, I think...
Some tuners provide a mosaic screen of e.g. 3x3 mini pictures, others may step through a choice of stations sequential.