K6sti Yagi Optimizer. 4/18/2017 0 Comments. Get the QY4 Yagi design program for download. Design Yagi antennas with this computer program by WA7RAI. Over the autumn of 2015 I have been corresponding with Garry Smith about the possibility of a commercial version of the K6STI 5 ele compact yagi for Band 2 being. HS PUBLICATIONS CATALOGUE 2016 V Download Elyana In Tollywood. 1.1.pdf: (1.41 MiB) Downloaded 831 times. The designs used the same optimization tradeoffs.

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. 4nec2 files are included in *.doc format, providing all dimensions. Save as *.txt format then rename as *.nec. 4nec2 files can also be imported into EZNEC and other antenna simulation programs. Brian Beezley, K6STI, used his AO 8.06 Antenna Optimizer to find a configuration that minimized response to the rear. 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.

Although slightly longer, performance differences between versions are very small, mostly reflecting fine tuning. In 4nec2 analyzes, F/R is the ratio of gain towards the front (azimuth = 90-deg) to gain towards the rear (azimuth = 180-deg). 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. This is different than the worst side-lobe level calculated by K6STI. Note that 4nec2 calculated SWR is slightly higher than K6STI's. I also investigated a Folded Dipole variant which has a Characteristic Impedance of 300 ohms (vice 75-ohm for above). Punch Landscape Deck And Patio V16 here. Serial Port Communication In Visual Studio 2010. 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).