After optimizing Folded Dipole Element separation, SWR was further reduced to under 1.4 with up to 0.25 dB more gain on Ch13 than K6STI's Yagi RevA, with small increase in F/R and F/B (except Ch12-13 decreased some). I also investigated a Folded Dipole variant which has a Characteristic Impedance of 300 ohms (vice 75-ohm for above). Note that 4nec2 calculated SWR is slightly higher than K6STI's. This is different than the worst side-lobe level calculated by K6STI.Īudiorealism Abl Pro Keygen. And F/B is ratio of gain exactly towards the front to gain towards the rear with an included angle of (my choice) +/- 45-deg. In 4nec2 analyzes, F/R is the ratio of gain towards the front (azimuth = 90-deg) to gain towards the rear (azimuth = 180-deg). On 19Jun he replaced Original with slightly revised RevA, which has improved SWR and Gain: K6STI's Optimized Yagi design is only 31.4-inches long and 32.4-inches wide, but provides good coverage across all Hi-VHF channels (Ch7-13) with excellent Front-to-Rear (F/R) and Front-to-Back (F/B) Ratios and moderate (7.4-9.3 dBi) Net Gain.Īlthough slightly longer, performance differences between versions are very small, mostly reflecting fine tuning.
4nec2 files can also be imported into EZNEC and other antenna simulation programs.īrian Beezley, K6STI, used his AO 8.06 Antenna Optimizer to find a configuration that minimized response to the rear. Save as *.txt format then rename as *.nec. 4nec2 files are included in *.doc format, providing all dimensions. Hi-VHF 5-El Yagi Optimized by K6STI holl_ands >Hi-VHF 5-El Yagi Optimized by K6STI K6STI's Hi-VHF 5-Element Yagi with Rearward Swept Driver Element analyzed using 4nec2. Get the QY4 Yagi design program for download. I like the shades! K6JRF's Page formerly W6FZC Yaesu FT2000 ESSB Audio Setup. Commercially discontinued AO Antenna & YO Yagi Optimizer by K6STI. › ▲ K6sti Yagi Optimizer Downloadįree download antenna optimizer ao Files.
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