Like stated earlier in this thread. The cable companies are supposed to pass in the clear, any content that is available over the air in the area you are located. So, most will pass all the major networks, as well as any PBS in your area. My local cable does that in both SD and HD. It also has ESPN in the clear. If your cable company is not, then you can call and ask why, or just connect an antenna and scan for local channels. I basically get about the same either way. My cable company is RCN. and I get almost 30 channels in HD, free in the clear with the QAM tuner built into my tv. Now, many are repeats. Meaning that I get several ABC channels. I also get the same from hooking up an antenna. But why if I'm getting the same via cable. Good luck.