I work tomorrow and service your area I will tell you the same it cant happen sell your house and move to Diamond lake where you have LOS.Sorry to be blunt but all of you say 300+ feet is trouble waiting to happen. Leave your number and answer when they call
I'm betting the issue has little to do with getting the signal across. Usually the problem is getting enough voltage across to power the LNB assembly.Local installers say you CANNOT push the signal that far, home office says there are amps but they can't get the locals to do anything but come out and tell me it can't be done.