Advertisements In general, when a TA is connected, it takes over channel mapping, i.e. virtual channel numbers to actual QAM frequency. Without a TA, the CableCard will perform the mapping. This would explain why you get the SD version with no TA, and then have problems with the TA connected. This is most likely an issue with the TA's channel map. In your case, I'm guessing the frequency associated with channel 116 is incorrect in the channel map on your TA. Furthermore, it's been awhile since I've seen it discussed, but TWC was starting to roll out auto-HD functionality to CableCard/TA setups in some areas. In this situation, the TA's channel map is updated to point to the QAM frequency of the HD channel, regardless of which virtual channel number you enter. This would explain why another user in the area indicates they're seeing the HD feed when tuning channel 116. Perhaps TWC is rolling out auto-HD in the area and the channel map upgrade has resulted in some corrupted channel maps. I'd try the national CableCard line again and ask about the above topics.