Craig Birkmaier wrote: > What I was trying to ask is why do we have multiple > infrastructures for broadcasting different services. One size doesn't fit all. For radio, more robust, less spectral efficiency affordable. For TV more spectral efficiency required, less robustness more easily tolerated. (This is high quality TV, not the cell phone kind.) The analog world accommodated this as easily as the digital world can. There is a small sliver of spectrum just above TV Channel 6 (in the US) for radio. So in fact, it does use the same infreastructure, depending how you define infrastructure. Digital radio often operates at less than 1 b/s/Hz. Do you really think it makes sense to run TV over that? Bert ---------------------------------------------------------------------- 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.