Yes, Galaxy 25, the IA-5 international. The transponders that seemed to be off were the weaker ones, and I suspect the LNB drift (cold/unpowered until I aligned the dish) and the receiver drift were causing the poor quality numbers. I had lock, else I would not have had picture at all.
I had severe breakup on channels I can usually get in well, even on a smaller dish. The BUD with Ku seems to be the best bet for DXing, and I just set up the 80cm so I can surf channels on
G25 without repointing the big un. (normally on NASA
C band feed)
I did some testing for industrial electronics in the later 70's and we had a -40 to +70 spec. We had to do some major tweeking and design work to get (close) to there.
And a chamber with a forced air heater and CO2 spray to chill.
Larry