M2 Antenna Systems fiberglass cross boom has been developed to work well with the Yeasu G-5500 and G-550. It allows solid clamping to the cross boom without crushing thin wall Fiber Glass tubes. It consists of a solid aluminum center rod and 2.0 x.250 wall Fiber Glass tube on each side of the center rod. The solid rod and Thick wall Fiber Glass tube gives the ability to secure large systems or arrays for years of slip free service.
Posted by KD9ERA on 10th Oct 2017
I purchased a Satellite station from a fella, the cross boom was steel, and the 2M antenna was more or less balanced on the crossboom. All documentation sez not to do this, as it drastically affects the radiation pattern of the antenna.
So I purchased the above reflected crossboom to enhance the radiation pattern, of the 2M antenna, for satellite operations.
It apparently works as it is supposed to do, goes together quickly, it is strong, and fits the Yaesu G-5500 Elevation rotator.
I think that is a little on the expensive side, however, that being said, if you want it right, you pay for the right equipment.