There is tons of info on the net regarding loops, G5RV and C. It will not operate on the 60 meter band in 5 mhz without a full range outboard antenna tuner. It has natural resonant areas in 80,40,20,17,15 and 11 meters and reaches 10 and 6 with a good tuner. I use a long horizontal loop cut for 80 meters, and it works on all bands 80 and above up to 6 meters. Two common examples of current point antennas are loops and off-center fed dipoles such as the G5RV and Carolina Windoms. Dipoles and all vertical type antennas are in the voltage point family and are considerably more "noisy" than current point types. In general, there are two electronic types of antennas. They are only "more quiet" where the majority of signals present on a given band are vertically polarized. But dipoles (horizontal) are not inherently quiet antennas. You can get it at K1CRA Radio Store - W2AU 1:1 Balun - For Dipoles DetailsīTW, the balun isn't absolutely necessary, but it's a good idea to help prevent common mode current on the feedline. Something like this is relatively inexpensive and includes the balun and connections for the wire pre-built: To be honest, it's almost easier to just buy a kit that has that part made for you. You should use a 1:1 current balun, or make a choke balun by coiling up quite a few turns of coax (6-8 should do it?) and taping it together.
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Of course, you have to figure out how to mount that stuff so it will last. In that case, all you have to do is solder one of the dipole wires to the center conductor, and the other to the outside barrel part of the connector.
I take it that when you said you want to "build it with an SO-239 and some wire" you mean that you're going to use coax for the feedline and want ot be able to just screw it into the dipole.
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If your goal is to try and "talk skip" and install the dipole horizontally, then you are probably going to see some differences. If you already have a 1/2 wave vertical and want to do a vertical dipole, you're likely to see basically the same performance. The answer to your question is "it depends".
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