UPDATE: Pole mount added. Features:
Compact Yagi for 869.525 MHz. 10 dB gain 38.69 dB front/back ratio Only 60 cm long Portable Extremely easy to (dis)assemble Horizontal and vertical mountable Shiftable elements. (Anyhow, not recommended unless you know what you are doing) Pole mount for poles between 24mm and 87mm Build this with:
7x M4 inserts + 7x M4 bolts 32x M3 inserts + 32x M3 bolts 6 M4 bolts, nuts and washers 15mm square aluminium tube 6 mm aluminium wire or tube 16mm squared copper wire (or tube) for the radiator. So you can solder a solder-eye to it. I hate clamp-fittings. U wire + bracket + 2 nuts and washers (for the mount). Or any other way you like to mount it. Printer needs/requirements:
Printer filament. Everything but PLA and TPE/TPU I'd say. Make sure it can handle water and UV if you dicide to mount it outside in the sun No supports needed
Stick EXACTLY Notes:
This antenna is designed with MMANA-GAL, tested with a NanoVNA and the printable parts are created in Blender. If I made mistakes or you see things I could do better or you have any questions, please let me know! Check this page frequently for updates in the next couple of months.Real measurements: Here's a video with the balcony-test-setup
_________________________________________________________________________________ I resized the whole thing. But I have no application for it. It is even illegal to transmit in the 915 MHz band in the EU. I'm not going to create a setup for it. So I can't test it. Anyway, it should be fine as long as you keep EXACTLY to this measurements. This one is even better for direction finding… But this is theory. Not real measurements ;)
Rexodus
