An interesting resource for RF testing
information:
www.rfcafe.com/
Digital Video Broadcasting Project:
http://www.dvb.org/
Advanced Television Systems Committee:
http://www.atsc.org/
National Translator Association:
http://www.tvfmtranslators.com/
Society of Broadcast Engineers:
http://www.sbe.org/
Community Broadcasters Association:
http://www.communitybroadcasters.com/
Society of Motion Picture and Television
Engineers:
http://www.smpte.org/
National Association of Broadcasters:
http://www.nab.org/
Federal Communications Commission:
http://www.fcc.gov/