We recently upgraded to V4.0 on our WCDMA SW and also the AISG. We are having some issues since with a high differential between Ant a and B on sectors. The only difference that I see since is that half of my sites have 12vdc output from the FRCA and B, and the others have 28vdc output. QUESTION: What is the input voltage range for the MDTA CS7299112.02 850mhz WCDMA Mast head Amplifier? Does the AISG Software assign this and how can it be changed?