[nknight]

> Consider my brand new Samsung TV set: I could not believe that program numbers are not unique! You can have two stations registered with the same program number!!!

As someone who has spent his career in DVRs and smart TV stuff, I have no idea what you're talking about. What is a "program number" in this context? Are you confusing "program" with "channel"?

[crististm]

I call a "channel" the frequency of a station; "program number" is what the TV gives me on the remote control to go to a station - the number on the screen.

In that framework, the TV has two frequencies (or channels) associated to the same "program number". I can switch between the two by entering from the remote the same "program number" twice or more times...