BNC Vertical Antenna Connector
thingiverse
Adapter piece that fits a BNC connector for making a vertical wire antenna. Vertical radiator is soldered to the center pole, and the four radials are soldered to the ground lug (after snaking through the holes on the corners for strain relief). Use 26 gauge speaker wire (split in two) or equivalent. Made mine with a 17' radiator and four 10' radials for 20M. Based it off of https://imgur.com/a/6LjhnAw (the four radial one towards the bottom), but as I didn't have any SO239 connectors laying around, I threw this together real quick.
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