Originally Posted by whoppr
- Is it possible to run coax outside and get this to work with the projector with a tuner box and do I need a Comcast cable box to get this to work?
Yes, it can be done, and yes to view most Comcast HD channels you'll need a Comcast box or CableCARD device.
- What does Comcast use for modulation? QAM? Soemthing else?
Yes they use QAM, but except for local HD channels, all other HD channels are encrypted and not viewable. There are clear QAM tuners available that will get just the local HD channels that Comcast carries in your area.
- If I do need a cable box, is there something cheap I can buy or do I need to purchase/lease through Comcast?
Besides a Comcast box there are other options but none of them are cheap. When you use a box other than what Comcast provides, the box needs CableCARD capability. Comcast rents you the CableCARD for a few bucks a month, additionally you pay them for the channels you want and in some areas an 'HD Technology' fee. If you already have Comcast HD service than the CableCARD rental fee would be the only additional fee. The two approaches with CableCARD capability are a current TiVo, which is an HD DVR, and a PC with CableCARD, also an HD DVR. The TiVo requires a monthly or yearly subscription fee to work, in addition to what you pay Comcast now.
- If I need the cable box, can I run the output from a box inside and send video/audio over ethernet, coax, other using a encoder or something?
Yes, there are very capable HDMI to Ethernet units. Last I checked, for both audio & video you'd need two Ethernet cables, not sure if that's still the case.
I wouldnt want to run HDMI for 100ft.
These days, running HDMI over longer distances is not a problem, if you get the right extenders. They should be externally powered and have at least 1.3 HDMI capability. You may need HDMI 1.4 if you want to go 3D at some point.