Do you get sound gaps in digital TV?

Question

I got a digibox recently and the picture is fine, but every half an hour or so there is a second or two gap in the sound. Is that normal? Or does it suggest my digibox is faulty? The picture is not ever affected at all.

I live in a city, so I'd expect a good reception.

BTW I live in the UK.

Answer 1

I get it as well, I think it is interference, if you are in London the most likely cause of this is too much analogue signal strength