Originally Posted by HDTVChallenged
Which raises the question why would they use 119 for guide data when I almost never have either tuner parked over there.
Well it has NOTHING to do with actually putting your tuner on 119; it has everything to do with the fact on the slimline legacy 5LNB's, the 103 HD (Ka) sat signals are frequency "stacked" on the SAME (switched) cable as the 119 bird. So, when you have your tuner parked on an HD channel coming from the 103 bird, your tuner actually is pulling guide data from the 119 bird. The 99 HD bird is stacked on the same cable as 101, so that's why there's no issue with that bird.
(FYI, in case you didn't know, the 110 & 119 sats are treated as ONE complete bird, as it is frequency shifted & falls into a different part of the band, but on the SAME cable as 119)
The ONLY workaround, would be that you do NOT keep your tuner(s) parked on a 103 HD channel for extended period of time; NOT really practical for most folks. Other than that, there is no way to alter these LNB's (or an external multi-switch) to get around the limitation.
None of the SWM LNB's or switches, nor the legacy 3LNB's have this issue, as they were able to ALWAYS pull guide data from 101, regardless of where the tuner is parked.