I built an 80m inverted V dipole and have it set up. It is cut for a 1:1.2 or better at 3.590. Why 3.590? That is the frequency we are using on our digital net on sunday nights. I was unable to hear one of the participants on my 102' doublet that is oriented E-W so in hopes of hearing him this week I put up a new antenna oriented N-S. that will put the station on the broadside of the antenna as opposed to the ends.
So the antenna vertex is at about 44'. The balun is a 1:1 current balun and the way it is hanging I would guess the vertex of the wire is at 42'. Each leg was cut before tuning to 66' . I got his from 80m * 3 to feet = 180'. Divide 180 by 4 to get 1/4 wavelength for each leg. This makes each leg 60'. Add 10% for tuning and I got 66' per leg. I put the antenna on the tuner and wound up cutting between 1 and 2 feet off the antenna so it is roughly 65' long.
I did the math and the angle on the legs is around 105 degrees. That falls between the ideal measurement of 90 and 120 degrees of it should be pretty good. I have been listening and sending this weekend and it is working pretty well. Only problem is that it has pretty narrow bandwidth. So it is below 2:1 without a tuner only between 3.4 and 3.7mhz.
I will eave it set up for a while to examine. It is 7-8:1 on 40m so it is really a single band antenna. Maybe next will be to add a fan element at 40m.
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