Meshtastic Yagi Antennas 868 MHz

I recommend a 6 element antenna. VNA tuning is not necessary, check for a short circuit. 3 antennas made taking into account the errors of the simulation programs. The dimensions of the elements and links to the authors of the original antennas in the file Yagi.txt The wire diameter can be 2-2.4mm. Drill holes and fix the elements with polyurethane glue. They work about the same way, the longer ones have a wider frequency band. Cut the elements exactly along the line of the ruler, this is important, you can sharpen it with a file. 50 ohm antennas. There should be no glass closer than 30 centimeters in front of the antenna, especially for the short one. The Long6 improved SWR when bending the director, as in the picture at the end. If you measure the wire accurately, then the antennas are guaranteed to work. Nearby objects affect the antenna. For example, if you put it on the table, it won't work. Mounting on 24x10, 10x10. There are MMANA and SpaceClaim sources. HolderL=HolderR. Long6 170 161 150 146 146 138 Long5 164 160 146 150 144 Short5 170 164 150 154 150