Mission T4; Single Satellite Viewing; Compatible With DISH HD?/ DirecTV SD ? and Bell TV ? Services; Roof Mount; White; In Motion Viewing; HD Compatible; Powered By Receiver; Supports Up To Two Single or One Dual Receiver; With 2 Coax Ports; 20 Inch Diameter x 12.9 Inch Height; 18-1/2 Pounds; With White Dome/ Hardware Bag/ 30 Foot RG-6 Coaxial Cable/ 25 Foot Power Cable; SWM-D30 Required for DirecTV Model H-25 Receivers Only