I scanned in the NASA channels on my CS8000 and I can hear sound on the first one but when I go back in and change the sorting from "sid" to "transponder" (easier to find channel grouping) and go to the channels it says "no audio signal" ...how is the sound there one minute and then gone? I tried my Pansat 9200 and no sound either...? I know these boxes do AC3... why is it there and then gone? 
