Customizable Helix (Helical) Antenna Frame and Winding Template

cults3d

This appears to be a tutorial on how to build a Helical Antenna, specifically for use in First-Person View (FPV) applications. Here's a summary of the steps: **Printing:** * The customizer will generate multiple files, including one file per part and one file with all parts. * The top and bottom frame parts can be used for left- and right-hand polarized antennas by turning one piece 180 degrees. **Assembly:** 1. **Reflector:** Prepare the reflector by marking its center and drilling a hole for the coax cable. 2. **Winding the Antenna:** Wind the antenna wire around the winding template, keeping it tight. 3. **Antenna Support:** Assemble the top and bottom parts of the antenna support, then turn the antenna through the holes until it reaches the bottom. 4. **Enclosure:** Slide the reflector into the grooves of the antenna support, add the ring with slits from the top, and attach the cover from the back. 5. **Soldering Antenna:** Solder the antenna wire to the core of the coaxial cable, ensuring the first 1/4 loop is at a height of 2.5mm from the reflector center. 6. **Wavetrap:** Cut the wavetrap to size and solder it to the center of the first 1/4 turn of the antenna. 7. **SMA/RP SMA:** Strip the shielding and inner insulation, then solder the center pin to the plug. 8. **Cleanup:** Check for continuity on the SMA connector and snip excess wire if necessary. **Results:** * The author achieved a range of 750m with a transmitter power of 25mW and a clover leaf antenna. * The image was crystal clear almost all the time, even through trees in line of sight.