Bert, ----- Original Message ----- From: "Manfredi, Albert E" <albert.e.manfredi@xxxxxxxxxx> > John Shutt wrote: > > > Mobile reception was > > never a criteria for the ATSC system, even though it clearly > > was part of the NTSC system. > > John, are you sure that mobile was part of NTSC's mission > statement? NTSC is horrible in mobile conditions, what with > ghost images coming and going, and everything blanking out > periodically. I never thought mobility was anything but > "try it and see," with NTSC. OK, let me rephrase my statement. "Mobile reception was never a criteria for the ATSC system, even though clearly NTSC was used in mobile applications." > > > It was only AFTER the Sinclair > > petition that > > people here realized that a digital television system even > > COULD replicate > > NTSC reception vis-a-vis low signal level (via hierarchical > > modulation), > > portable and mobile reception, and dropout free reception using simple > > indoor antennas. > > I don't know which people you mean, but aren't you overstating > this? It has been common knowledge that lowering the bit rate > makes reception more bulletproof. You don't need HM for that. The people I mean are the television engineers and station managers who were not in on the design of ATSC, but attended the Harris/PBS DTV Express series of seminars that taught us about the coming digital age. In those original seminars, it was a given that rural viewers would be able to receive ATSC with improved high gain outdoor antennas, possibly with electronic amplification, and that urban/suburban viewers would use cable. I personally didn't even know about DVB-T until Sinclair performed their 1999 Baltimore demonstrations and literally shook the ATSC world upside down with the night and day performance differences. Did you? Cheers, John Shutt ---------------------------------------------------------------------- You can UNSUBSCRIBE from the OpenDTV list in two ways: - Using the UNSUBSCRIBE command in your user configuration settings at FreeLists.org - By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word unsubscribe in the subject line.