Repair Parts for Hygain 14AVQ Antenna Trap, with FreeCAD file

thingiverse

These are repair parts for a trap on a vertical ham antenna. The cap keeps water out of the trap, and the coil form holds the coil. Both of these parts had deteriorated and needed to be replaced. I printed the cap in TPU, and the coil form in ASA. The coil form has a hole down the center to accept a piece of fiberglass rod, as otherwise the mechanical strength of the antenna would depend entirely on the strength of the ASA. The original was in epoxy, and had broken, so the ASA would not stand a chance without being reinforced somehow. The triangular fins on the coil form are support, and should be trimmed off when done printing. They are 0.4mm thick. They may crack at layer lines during printing, but that shouldn't matter. Their purpose is to keep the long vertical piece from moving while it is being printed. The cap has an inner lining that is intended to just make a more robust. I have modified this to include substantial strength, as the stiffness of the antenna as a whole depends on not having the trap move sideways. If you downloaded the previous version, try the new one, it is much better. I don't know the brand of the antenna, possibly it is Hi-Gain. It is about 40 years old. I am including the FreeCAD file that was used to make these two parts. My modifying the sketches, one should be able to customize these parts to fit any similar trap design. I printed the cap in TPU on a Tevo Tornado, and the coil form on a AnyCubic Linear Kossel in ASA. Here is a webpage about the antenna: https://www.dxengineering.com/parts/hgn-av-14avq