A:AnswerI have a 7900 sq ft house with the router in the bonus room above the garage. My house is two stories plus a basement. When I first set it up with the router and two satellites I was getting a weak signal on the very far end of the house. I added one more satellite and coverage has been perfect we stream tv plus internet and it works like a charm
A:AnswerI found that anything in the 700 series worked together. I'm not sure what the 189 refers to. I haven't had any issues with my satellites working together.