Trials of a new 'super wifi' begin in Cambridge. The new service uses the gaps in frequencies between TV channels, and the sponsors of the technology say it could mean a better internet service for rural areas.pThis article is from the a href="http://news.bbc.co.uk" title="Link to BBC News"BBC News website/a. © British Broadcasting Corporation, The BBC is not responsible for the content of external internet sites./p pa href="http://feedads.g.doubleclick.net/~a/qNz7m5l9ZtTH8ys71G67CTxs7wQ/0/da"img src="http://feedads.g.doubleclick.net/~a/qNz7m5l9ZtTH8ys71G67CTxs7wQ/0/di" border="0" ismap="true"/img/abr/ a href="http://feedads.g.doubleclick.net/~a/qNz7m5l9ZtTH8ys71G67CTxs7wQ/1/da"img src="http://feedads.g.doubleclick.net/~a/qNz7m5l9ZtTH8ys71G67CTxs7wQ/1/di" border="0" ismap="true"/img/a/pimg src="http://feeds.feedburner.com/~r/BbcNewsTechnologyFullFeed/~4/DqRYadEXR7M" height="1" width="1"/