[bobsgarage]

Here's where things really get different with the 91 XG and the SX 91. The DigiTek version has steel booms. It also has mounting lugs for the X element directors. Not sure why that is. Seems like it cost a lot more to do it that way so it must have been either an afterthought some sort of correction factor. Each plastic mount is installed with a heavy duty pop rivet.



Side by side comparison of the rear most part of the boom sections for both antennas. The aluminum boom is the antennas direct design, note that the spacing is different between the two so it's not a direct copy: