I think some have missed the ppoint. 1st what you are buying is a small dish with servo motor that's what locates the sat signal or sats. They work very well. You need a receiver either from your home or you purchase another, usually one that's comp...
Locked rotor amps=same as if it was seize-up for 1second generator won't handle it. Looked into a START CAPAITOR ON THE A/C compressor this helps reduce the starting load.
N0' all about the same. They all use the same cheapest components, Lippert leading the way in junk. Bought an Artic Fox couple yrs ago same junk, now 10 yrs ago a good unit, had one.