Even if you don't have cable or satellite, don't throw out an analog TV.
You can get a tuner for over-the-air Digital TV. Nearly every such tuner offers an NTSC output (in addition to HDTV modes), and can (perhaps with the addition of a very inexpensive RF modulator and a 75 to 300 ohm antenna transformer) be hooked up to ANY american TV set (okay, if you have a very rare RCA TRK-9, you'll have to convert if from 441-line to NTSC, and I assume that's been done already?).
Worried about price? You can get a $ 40 couppn to help pay (or pay outright) for the cost of the converter, whether you have cable or not (go to
www.dtv2009.gov).
FWIW, I have used my RCA ATSC-11 STB with my Emerson 1224 B&W set from 1957. I've also fed this box with the output of a Standard-Kollsman UHF converter, giving me a DTV receiving system that not only uses 21 tubes, but offers mechanical tuning!
Rob Grant, Michigan.