I'm assuming my DVD recorder has a DVD receiver, b/c I get the digital signal for the 3 PBS stations in my area (Greenville, SC). However, I don't get any other channels. I've been afraid to use the "reset all channels" button b/c it says once I do that I will lose all current settings, and I'm afraid I will lose the PBS stations I'm now getting. Does anyone know why I can receive some, but not all, digital stations? I feel like I don't need a converter box since I'm getting something. Thanks.