Dennis is running 3 AlfaSpid rotators on one of his towers. He's turning a 5 element 20 meter beam, with a 40 ft boom at 130 ft on a 32 inch side arm. A 5 element 20 meter beam , with a 40 ft boom and a 2 element 40 meter beam, with a 20 ft boom at 90 ft, no side arms, just side mounted mast. Rotation is restricted to 315 thru 90 degrees. You'll also find a 5 element 20 meter beam, with a 40 ft boom at 50 ft on a 32 inch side arm.