ECHOSLOB, You are correct that they aren't the same as a regular LNB but they don't act like a BUD LNB either. I did a quick search and found the info: "The LNB receives the high frequency signals from the satellite and converts them to a lower frequency compatible with the DirecTV receiver. Although the receiver software and displays accurately depict the 32 transponders at 101 and 119, the receiver is receiving signals from the 110 location as if they were coming from 119. To further complicate matters, the tranponders licsensed to DirecTV at 110 and 119 are in the same range. The Sat C LNB converts the signals from 110 to appear as if they were transponders 8, 10 and 12. These are transponder numbers allocated to Dish Network at the 119 location. The special combiner filters out the Dish Network transponders from the Sat B (119) LNB and combines what is left with the converted signals coming from the Sat C LNB."
Also D* had NC locals on 110 until Dec 27 '01 when they moved them to the spot beam sat at 101. Until Showtime HD was added this spring, the sat was sitting idle. There are still two free transponders on this sat and sometimes people report test channels on them.