I can view the Philadelphia Fox station (29-1) just fine if I view it with my Vizio TV's internal tuner getting the signal from the roof antenna hooked into it. But when I switch over to the satelite input, the HR-20 shows the channel (29-1)in the guide but when I go to watch it it says there is NO signal. From what I can tell all the other channels work fine OTA, and on the HR-20 Guide. Currently I have the big antenna on the roof running into a splitter > One line going direct into the HD TV (Vizio GVL42 LCD) from the splitter > One line going into the "Antenna In" on the HR-20 from the splitter I have not had a problem until today. Can anyone advise?