I repositioned my antenna to the outdoors and 10' higher. I now receive all but one station but have noticed a marked differance in how the 811 locks. Now the 811 locks on very quickly but for some reason the signals that are in the 65 to 75 range seem to lock and hold but the signals in the 75 to 85 range will lock and then fall out after awhile and then lock again. This seems to agree with some posts here where the 811 does a good job with weaker signals and still has problems discerning the strong signals. I have read where the next upgrade sometime towards the end of April will deal more directly with the 811 locking software and the dark output--lets hope so!