As mentioned earlier, I have made a 3D-printed base for this antenna. I used banana plugs as the connector for the radials. This has proven very practical in the sense that the antenna is easy to set up, even with mittens, but they also fall out easily. Do you know about any other practical alternatives to banana plugs that sit better?
I guess I could try to find better banana plugs or try to fit a slightly too-large plug into a slightly too-small hole, but I am also interested in other options. For example, AUX connectors seem to sit slightly stronger than banana plugs, but I don’t need two channels, and I am unsure about their power rating.