Craig Birkmaier wrote: > Obviously Bert has no interest in the challenge. His > pre-conceived notions about the viability of SFNs versus > continuing to waste valuable spectrum with the current high > powered ATSC big stick approach are keeping him from using > his imagination and engineering skills. I know you too well. When I thought about your likely response to some real answers to your questions, I figured you would respond just this way. Which is to say, if technically appropriate answers don't agree with your mantra, don't adjust your vague notions, but rather tell the other guy that his thinking is not as broad-visioned as your own. Once again, to design an SFN that works along a narrow strip on the coast is not that hard. But what makes it a really bad idea is that reception to the east of this narrow strip will become far more tenuous than it would be if you had implemented a network of translators. Or, as I have said repeatedly, you can install a dense mesh of sticks to cover the entire market. Not your usual vague response of three small sticks, or similar. That won't create the sharp contours you seem to think are desirable, nor will it cover the required area. In order for FOTA TV to be competitive and self sustaining, you cannot burden it with delicate and expensive infrastructure. Just as you cannot burden it with too much "localism" in the content. You need to make it simple and effective, and the content needs to be appropriate for mass consumption. Every time you try to deviate from these simple basics, IMO, all you're doing is encouraging the demise of FOTA TV. In the past, I have gone to some effort to show you what your large area SFN notions might lead to. One example was for Baltimore TV stations, to provide what you consider to be the right cookie cutter coverage of their existing market area (i.e. right up to the Delaware border and way west of there too). But *my* intention in those cases was to show a reduxio ad absurdum, not to egg you on. IIRC in the Baltimore market area, it took between 38 and 41 sticks, not to mention that these needed to be synchronized. By the way, notice in the Qualcomm white paper that even with their mesh of sticks, they have 15 Km wide dead zones in their Wash DC example. Notice the 300 meter sticks and 50 KW ERP in their dense mesh. (Isn't that what you recently called "earth scorcher"? Now you have a mesh of these. Are you changing your tune?) The dead zone is what I said would be a non-starter for FOTA TV nets. And I don't see anywhere in the white paper that they intend for these networks to be FOTA. Or did I miss that detail? The French, the Dutch, the Germans, all seem to have come to the same conclusion about using large area SFNs in FOTA TV networks. I guess they all lack vision. 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.