What your seeing here is one of the 3 element take-down yagis that I built some time ago, and for the most part, it hadn't seen much use. Recently I found a need for it, so I put it to work as explained here....
This antenna was constructed from 7075-T6 aluminum alloy, and with zinc as the primary alloying element. It is strong, with a strength comparable to many steels, and has good fatigue strength, but has less resistance to corrosion than many other Aluminium alloys.
I choose this particular material as it came in the anodized form as seen here, I ts use was meant as replacement segments used to replace damaged tent pole sections in high quality expedition mountaineering tents, and therefore making up what to my eye is a very pretty and yet a very functional antenna.
This antenna has many features making it quite unique in its design and construction, that includes double-start threads on the elements and boom allowing for quick assembly and disassembly. The boom built in two segments, includes a spring loaded button to assemble and disassemble the boom.
The Gamma match is quite unusual in its build, utilizing the tube that houses the modified BNC, as well as the necessary electronic components located just beneath the BNC forward of the insulated gamma match element clamped to the driven element.
The handle is black Delrin with included knurling for effect and easier handling.
All the elements and the main boom have inserted aluminum buttons on the ends closing off the elements for aesthetic reasons.
Click on the photo for a closer look.....
Here is a closer view of the Gamma match..........