In a way, this is a remix - but not of a specific thing, but of several designs, that I found here.

I picked up the ideas of using the socket as the center, of a printed center-part as a jig for the right angle of the radials and die possibility to fix the radials with zip-ties.

I designed the center piece in a way, that it`s a shelter for the connector underneath and I added a simple way to attach it to a pole - in my case with reusable zip-ties.

My antenna is optimised for 145725000 (the QRG of a repeater nearby) so it´s

300000 / 145725 = 205,7 cm
205,7/4 = 51,5 cm (1/4 Lambda)
51,5 cm * 0.96 = 49,4 cm

The radials became the same length. I made all a bit longer and tuned with an analyser. After tuning the center I shortened the radials - again to the same length. Keep in Mind to measure the radials beginning at the center-connector.

For my fist experiments I used some wire from an old cable. After successful doing this, I bought some brass rods (pipes). I flattened the ends in a vice end drilled 3 mm holes to screw them to the center.
The "hot" end is soldered to the center of the pin. To seal it and to make it more stable I used some hot glue.

Turn the STL 180° for an easy print.