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A couple of years ago, while on holiday in Portugal, we were walking through the village where we were staying, when we heard a burst of cheering erupt into the night, a couple of seconds later there was another, followed by yet another a few seconds later. Portugal had just scored the winner in the Euro Finals and I reckon it propagated from Terrestrial UHF to Terrestrial Digital to Satellite TV with the least lot being a good 10 or 15 seconds behind the first to know