Here is another thought....and it has to do with our dish size
Just ran a test of signals depending on which TP I peaked 125 on. The issue we have is 2 signals on 125 have another TP of same info (or close) next door
PBS HD (12140 V 30000) has a data TP with the same info at 127W
WSEE (12004 H) there is a TP that is strong on 12005 H next door on 123W
Since my dish was peaked on WSEE almost all the PBS stations didnt even lock a signal. The only ones I locked were
Montana PBS
Montana Leg (TVMT)
Main PBS TP (12180)
WSEE (12004)
none of the rest I could lock. So I moved the dish a little east which dropped WSEE down but the rest came up. Here is what I showed on the azbox
12072 LPB (DVB-S2) 52
12180 PBS 83
12095 PBS feed 57
12104 Montana 76
12140 PBS HD 56
12150 PBS HD Feed 54
12163 PBS feed 58
12169 PBS feed 63
12175 PBS feed 53
now if I peaked the dish on the 12140 TP then I get the following results
12072 LPB (DVB-S2) 52
12180 PBS 83
12095 PBS feed 63
12104 Montana 76
12140 PBS HD 58
12150 PBS HD Feed 49
12163 PBS feed 53
12169 PBS feed 59
12175 PBS feed 51
This is all on a 76cm Winegard dish/Sadoun dual .4 LNB
If I had a bigger dish I could get better results. Later on I'll try the 36" dish I have. The key thing is with the PBS HD feed you need to reject the signal from next door at 127W. Bigger dish will help with that. I know when I had my 1.2m dish at 125W all the signals were very strong. All were maxed but 12140 which was at 75-80 quality on the Pansat 1500. Conversely right now 12140 on that Pansat reads at 55
You have to remember PBS has their affiliates use probably 15 foot dishes so they can reject the adjacent sats just fine (and they probably dont care about WSEE either)