Wind load when mounted in a tower. Motor runs smooth and tracks 360 deg as shown in the photos on the controller in the S, W, N, E, S DIRECTIONS, the control has a few scratches blemishes etc.All switches and light functions as should , the 6 lug terminal board wiring connections on the rotor are new screws. I have installed towers and been rebuilding rotors for 30+ years and take great pride and joy in dong so, let me rebuild your rotors to look and run like this, THANKS KEN KT4KI in the heart of dixie 73! The item "ALLIANCE HD-73 ROTOR ANTENNA ROTATOR + CONTROL CONTROLLER NICE" is in sale since Sunday, September 9, 2018. This item is in the category "Consumer Electronics\Radio Communication\Antennas\Ham, Amateur Radio Antennas". The seller is "rotortime" and is located in Bessemer, Alabama. This item can be shipped worldwide.