Dave Plowman wrote:

There are bound to be some parts of the country where reception is poor.
Hopefully addressed as time goes by.

Of course, and I have noticed it getting better in several places.

But then that's absolutely no
different from any other transmission system.

But what I was pointing out is that it also gets worse in other places
too. Presumably the COFDM guard interval is not long enough to see
multi-reception as "helpful" in such cases?