well there aren't that many English-language satellite boards or forums around at all.
There are those which spring up and die a quick death. Look here for example: http://pub9.ezboard.com/bsatlinksz
There are a few that have very limited functionality or small range of forums. Eg here: http://pub12.ezboard.com/bdigisatchat
There are sequential message boards, that have no structure and are difficult to use as a real source of information. They also mainly tend to focus on one thing (eg codes, or electronics) Eg: http://www.insidetheweb.com/mbs.cgi/mb1130126 http://www.InsideTheWeb.com/mbs.cgi/mb1004587 http://users3.cgiforme.com/knplogic/cfmboard.html http://www.algonet.se/~dynamit/wwwboard/wwwboard.html http://hostedscripts.com/boards/icprog/ http://www.geronimo.nu/cgi-bin/index.cgi http://discserver.snap.com/Indices/21600.html
Oh and there's this one... http://network54.com/Hide/Forum/54235 That one's not English as such. It's that strange hip-hop silliness small boyz like to use. Personally I get bored trying to figure out what they're all on about between the "Z"s, the errant capitals and names like "bitch innit" (or whatever).
There are a few principally non-English boards that have one or more English forums, but they tend to be quite restricted too. The best of those is here: http://www.sat4all.com/cgi-bin/Ultimate.cgi
But my advice is to start a lively exchange here under our own "digital systems" forum. If there is sufficient interst, we can dedicate a forum to it. http://www.satellites.co.uk/cgi-bin/dcforum/dcboard.cgi?az=list&forum=DCForumID7&conf=DCConfID1