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Originally Posted by tmhtmh 
Hi. I used to check the HDTV Rochester site for info but it seems to be gone - so I found this great site! I have a few questions for the tech folks here.
I have TWC Digital/HD package with a HD DVR in my family room. In my bedroom I have a newer LCD HDTV (no box) so I get the standard channels I guess. If I enter channel "8-1" I THINK I get the HD version of chennel 8 (CBS ?) and so on for the network channels.
1. Where do I find a list of other HD channels I can get via the regular COAX cable and my digital tuner? Is this what QAM is?
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QAM is the method used for digital cable channels. They can fit 2-3 HD channels or 12-16 SD channels (or some combination) on one QAM. While the actual QAM channel numbers (like 93-8) can be confusing, modern HD TVs take advantage of a signal embedded in the QAM bit stream called PSIP. The PSIP contains the virtual channel information so you see 8-1 instead of 93-8.
TW screws around with the QAM assignments once in a while, so if channels disappear a re-scan is in order.
TW encrypts most of the "cable" channels (like CNN) so you can't get them without a box. They also use a technique called SDV on many of the HD channels, that also requires a box to receive.
Quote:
Originally Posted by tmhtmh 
OK, my kids now have a HD Projector for their basement "home theater" setup - just got it, used, good picture IMO, has component and VGA inputs. We can run the coax thru the older TV down there and use component output to the projector for non-hd TV.
2. How we get HD channels for that system? Do I need a digital tuner of some sort I assume? Are there inexpensive tuners or DVD palyers (with tuner) that could do the same as my bedroom set - get the channels like 8-1 and others?
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There were a bunch of these around 8 years or so ago, but they have pretty much disappeared from the market. The best solution is to "spring" for a TW cable box for this set-up.
Quote:
Originally Posted by tmhtmh 
3. What about for HDTV from the computer/internet? I assume we could use a HD tuner thru USB maybe ? Any suggestions?
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I assume that we are talking about the theater. Yes, but getting something with component output might be a challenge.