This is my 3D printed driven element box for yagi antenna. It was build for light portable antenna suitable for SOTA operation. I believe idea of using brass anchors as contacts is original.
- 8 mm outer diameter brass pipes as driven element
- M6 brass anchor (some types need little manual work)
- M6 nylon threaded rod (35mm in length)
- cable gland (15mm outer diameter, 8mm inner diameter) in Poland PG9 type
- N type connector (this on picture is non-standard, but STL files are for standard 4-hole type N or PL259 connector)
- square 12mm boom
-self screwing bolts
Finished antenna (with umbrella for size comparison).
(4 element DK7ZB 50-ohm ultralight yagi)
Brass anchors must be "presoldered" outside box - before mounting on plastic rod.
Solder wires to solder "blob".
Cable gland nut need to be cut a little with a knife.
Hole in plastic for nylon rod must be threaded.
Whole thing can be made without 3d printer, and so was prototype made, but its is not an easy task.