I'm working on a kite-supported antenna for an 80m QRP rig -- to be flown at beaches, on mountaintops, and possibly other places where I want to work HF but don't want to lug poles or give up efficiency with a sub-optimal antenna. This will be a center-fed half wave dipole, so about 132 feet of wire.
I have the kite already in hand, a carbon spar nylon sail conyne (aka French war kite, a hybrid of a box and a diamond) just over three feet in length. It's stable, flies in a broad range of wind, and has good pull (so keeps the line taut).
To support the antenna wire, I plan to use 000 size locking snap-swivels (made for fishing) bent to the kite line with prusik knots. The knots can be loosened and moved when adjusting the setup, and are light enough that they won't affect the kite if I'm not lifting the antenna. Because they grip the line without forcing it into a sharp bend, they will have almost no effect on the line strength.
My question concerns the snap swivels (similar to these). These are effectively tiny wire loops that will hold the antenna, one at each end, one in the middle, and two or three spread along each leg of the dipole.
Due to their small size, I wouldn't expect these loops to have any noticeable effect on the antenna's radiation in the 80m band, but I wanted to ask to be sure. I'd hate to key up the transmitter and find out all the power I'm sending up the wire is going into heating the snap swivels. Am I correct in thinking a stainless and brass snap swivel, with the snap loop about an inch long, will have no significant effect on the radiation of a half wave dipole on 80m band?