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"It has been quite a drought for HD fans who subscribe to DirecTV and while DirecTV has made big promises for 2007, it would be nice if they added a new HD channel before the new birds go up later this year. It appears that it just might be happening, a few DirecTV subscribers are reporting a new channel in the lineup: channel 77 shows as NGHC which we assume is the National Geographic HD Channel. This has been reported by users of both MPEG2 and MPEG4 equipment and considering current DirecTV satellites aren't setup for national MPEG4 channels, we can assume no upgrade is required to enjoy this channel, if the guide data and channel actually show up."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.engadget.com/2007/03/03/national-geographic-hd-showing-up-on-directv-ch-77/>