LHCP 5.8gHz Rx/Tx antenna for FPV. Looks like an Airblade by IBCrazy. Performance depends fully on your building skills.
Apperently flipping the STL along the X axis in Sli3r is too much of a challenge, so I did it for you. Added RHCP_Gig.stl.
To complete the build you need:
five M3x5 button head hex screws (for the jig)
Print the parts and clean them up. Cut M3 threads into the five holes on the jig.
Antenna is tuned to 5780hz, left hand circular polarized (LHCP). To make a RHCP antenna, simply flip the jig around the Y axis in sli3r (no I will not do that for you).
I created this jig because a set of IBCrazy Airblades costing $64.99 will end up costing $120.- when factoring in shipping, tax and Danish Postal Services handling fee.
To make a set of antennas:
RG402 semi-ridgid coax cable
SMA or RP-SMA connector (the solder on type)
0.8mm MiG welding wire
6mm and 8mm heat shrink
Epoxy putty to secure the center of the antennas once finished
Using the bending tool, cut five pieces of 0.8mm MiG welding wire to 65mm (4x13mm + 4x0.8mm bends + 10mm peg).
Use a set of needle nose pliers and the bending tool to bend 5 square lobes with a 10mm peg at the end. Angle the peg so it fits into the center piece. About a 55 degree angle. Secure the lobes with the M3x5 screws. Bend the tips of the lobe wires to meet in the middle. Remove the center piece and insert the RG402 coax (about 3mm of the outer braid removed). Solder the center core to the lobe tips, then solder the lobe pegs to the outer braid of the RG402. Make sure that inner and outer part of the RG402 does not touch. Add a piece of heat shrink to the antenna and solder the balun in place. Secure with another piece of heat shrink or epoxy putty.
Use the bending tool to mark a 26mm section of wire to use as a balun (½ wavelength). Bend the wire around a 6mm rod to create a small spiral and cut the balun where marked.
Andrew McNeil explains how to use a balun here: https://youtu.be/InLEq04R5So?t=9m58s
Watch this video to get the general idea of how to use a antenna jig: https://www.youtube.com/watch?v=8PKhqbBy2ls
I will not alter the files to accommodate your specific printer/slicing software or what ever size wire you have in stock. I will not provide test data or proof of concept. If you want to make one, make one. IF they work for you, great. If not, buy a set of Airblade antennas from IBCrazy, I hear they are awesome :-)
You may not under any circumstances use this jig to produce antennas intended for sale. Please support Alex Greve aka. IBCrazy by buying his antennas instead. A lot of time and money has gone into the creation of his antennas.