Join Date: Apr 2001
Location: South Dennis, MA
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I'm a DBS, PTV, Home Theater etc. enthusiast and I'm familiar with avscience forums because I own a TIVO. Sorry if this isn't quite the usual hobbyist chat.
I have been appointed to my towns Cable TV Advisory Committee because they want to beef it up with tech people. This would be great, if we weren't under huge time pressure because the previous committee has done nothing for two and a half years of our three year renewal period, so now we're scrambling and have lost a lot of leverage.
I'd like to make sure that our rebuilt system will be capable of carrying HDTV signals and I'm concerned that they will build a system for today not for tomorrow--which is what happened last time around.
The big technical question is how much bandwidth do these take up. Contracts are phrased in terms of a "750mhz system capable of 77 NTSC Channels" or the old one is a "550mhz" system etc. What kind of a system are we going to need to accomodate HD signals.
So my questions are more specifically phrased:
Anyone know of cable systems currently doing HDTV or municipalities with HDTV written into their contracts? Any with specifications for full passthrough (ie, not stripping multicasting) or for analog conversion of multicasting?
Technically, how many NTSC equivilent channels does a full HDTV signal take up--does it require greater bandwidth?