"tony sayer" wrote in message
...

Now there is a school of thought with digital transmission that sez
either it works or doesn't which isn't exactly true there is a halfway
stage with the picture lockup and blocking.


There is no halfway stage. If you get lockup and blocking at all, then it's
not working!! ;-)

The data has degenerated to the point where it is useless, and the TV loses
it.

F.