On January 1, 2007 at 14:17, stefanfl said...
Sony said that I can use an RF modulator with the HD antenna
although this would significantly degrade the HD signal.
I'm guessing that I can use an RF modulator with the
Comcast coax cable as well. The main problem is that
the TV only has one coax connector/tuner.
No! How can you modulate a signal that is already RF? If they mean demodulate, then you need an external tuner.
First, you could just get a simple A/B switch, however, a few conditions must be present to do this. Dopes your TV allow antenna and cable channels (digital and analog) to be programmed at the same time or do you constantly have to go into the menus if you want to change? If they can all be tuned at the same time, then an A/B switch will work fine.
If not, I reccomend using an external tuner for your cable and letting the TV decode the antenna signal itself. Much cheaper as you could use a VCR as the cable tuner and output it via composite to the TV.
