This Thing is a clip for hanging a wire antenna along the fascia (and bargeboard) at the edge of your roof. It is designed to hold a 3mm max diameter wire. I recommend only using this for receiving HF/MF radio signals, While it is totally possible to use these parts to make a 450 ohm ladder line fed doublet/dipole, transmitting on this wire held only 16 mm away from your wooden fascia board is entirely up to you. I officially do not recommend transmitting using these parts.
I have also included an "adapter/junction/tie point" for hooking it up to 450 ohm ladder line, tilted at 25³. It is not a balun, since I am going from doublet/dipole (balanced) to 450 ohm ladder line (balanced), and doing no transformation.
When not in use, and when lightening/thunderstorms are about, DISCONNECT THE ANTENNA FROM YOUR EQUIPMENT! Then secure the end of the antenna away from your house. As with all antennas, it will become a lightning rod, destroying all in its path if it is struck. You have been warned. Be safe. Take no chances.
The Things include a hole to use for nailing it into place, with a .5 mm "shell" across the top of the hole. This is so you can pre-load your nail into the hole, and the shell should should hold the nail in place until you have positioned the clip, and can swing a hammer.
The wire slot entry point is angled with respect to the final wire position. As long as the wire is aligned with the fascia board, it will not pop out.
...I'm hoping that this wire will be stealth enough to avoid the notice of the HOA. It sure would be nice to work 80 meters...
I'll be uploading pictures of it in place, once I get up on the roof (with two ~60-foot lengths of disassembled cat5 conductors and a length of 450 ohm ladder line). Note: there is no coax balun in this design. I have an MFJ-971 tuner which handles balanced line for me. So the only coax in this system will be the 18" LM400 between the tuner and my Icom. Wish me luck!
As with all my designs, no supports required.