Vertical antenna loading coil by SA2CLC

Multiband antenna loading coil, Print the coil standing, with the SO-239 hole at the bottom. The pole mounts is printed laying down, print 2 at once. Coil is wound with aluminum fence wire, crimped terminals. a radiator length of 5m / 16.5ft will work on 60m, 40, 30 and 20m. Longer radiator will tune lower freq. Hardware needed: 3 banana jacks, see link belowhttps://www.peconnectors.com/test-clips-hooks-plugs-jacks/hws16371/ or you could also use M6 / 1/4 bolts instead, with double nuts to hold antenna wires. M3 screw, nut and washers. Crimp connectors, 2 with 3mm hole, 4 with 6mm hole. 1 SO239. 4 self tapping screws to hold the SO239 (3mm wood screws was used on this). Wire for the coil, I used aluminum fence wire. 2 pieces of wire, one to short turns, one to connect the start of the coil to the center pin of the SO239. Gator clip to short turns. A piece of copper wire as ground bus. The start of the winding is attached to the coil using a 3mm crimp connector and an M3 screw. On the inside another 3mm crimp connector and a short piece of wire is used to connect the M3 screw to the center pin of the coax connector. The coax connector is held in place using self tapping screws. The ground connection is made using a piece of tinned copper wire run between the ground banana jacks using two 6mm crimp connectors. The wire is run behind the coax connector, which when tightened, gives a good connection to ground. The end of the coil is terminated in a 6mm crimp connector which is held in place by the radiator banana jack, which also holds the shorting wire along with it´s gator clip. https://www.youtube.com/watch?v=-jBY1lX0aCg Inspired by https://www.thingiverse.com/thing:1725339. Printed the aforementioned coil form, but it needed tons of supports, and was a bit too large for my liking. This prints with a few minor supports, and is a bit less bulky.