Things are progressing slow but sure on my first ever homebrew amateur radio antenna project. I documented this project earlier in a couple posts that can be found here and here.
I've constructed the sleeves that connect the two sections of the main mast and also made the fiberglass insulator that separates the main mast from the top mast. This fiberglass section also acts as a coil form on which I wound the loading coil from 20 turns of #16 magnet wire.
I drilled an extra set of holes in the fiberglass tubes so that I could wind a coil with more turns for a lower frequency in the future. Once the coil checks out and no further adjustments are needed I will cover the loading coil with shrink tube and silicon to protect it from damage once in use.
Loading coil for 40 meters (7 MHz)