Looking up
View from the ground looking up at the antenna. The DXEngineering reinforced lower tube replaces the first six-foot section (which serves as the 10-meter element) with a thicker-wall tube and a second tube which slips on over it. This restricts bending at the base and helps keep the antenna from warping, bending or kinking in strong winds. We have had some 40+ mph winds at my QTH since the antenna went up, and there has been no damage. Each trap is a low-pass filter that allows the next band to pass and the next higher band to be blocked. The first trap, for 15 meters, passes 21 MHz while rejecting everything above about 25 MHz, so as to block 28 MHz and up. Going up, the next traps are 20, 30 and 40 meters. The 80 meter resonator serves to top out for 40 meters and resonates about 50-60 kHz of 80. (Due to the design, the antenna is unsuitable for six meters and does not resonate at all on the other WARC bands.)