I had a Directv R10 hooked up through a splitter to two older SD tv's via RF. The picture quality was quite acceptable to me on both. I decided to upgrade the R10 to a HR20-700, which does not have RF output, so I bought an RF modulator and hooked it up to both TV's. The picture quality is now considerably worse on both TV's. I can hook one up to composite, and it's fine, but the other is in the bedroom 30' away. I tried checking all the connections, and even took the RF modulator back and bought another, and it's the same. It is a cheap phillips brand. I tried two different models of the same brand. Do you get what you pay for with these things, or am I expecting to much?