I have a HR20-700. I also live close to the Canadian border and am able with my antennae outside my house plugged directly into my TV to pick up 6 OTA HD stations. Signal levels are very strong for the OTA stations on my TV signal meter. I thought I would experiement and plug the coax from outside into the off air input on the HR20-700. I found that only 2 of the 6 stations show up on the DirecTV guide, which is also the case when I actually scan through all the OTA channels using channel up. Was wondering why I only would be receiving 2 of the 6 OTA channels? P.S. All the OTA 6 channels are digital, btw.