I wonder why Hy-Gain designed their rotators for a Ø2.062 mast. 2" DOM runs close to size, no more than Ø2.006 and galvanizing might add another .003/ side. John KK9A Bob K6UJ wrote: l looked it up in the manual. The T2X manual says maximum mast diameter is 2 1/16" 73,BobK6UJ