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In the ARRL antenna book, in the chapter on portable antennas, there is
an article on a folded dipole using 300 ohm tv twinlead, which is matched using a capacitor, or a stub of 300 ohm twinlead. I've had one of these for 80 meters for over two years, and I'm quite happy with it. I made it with "rat shack" TV twinlead, exactly according to the cookbook, and it has a 1:1 SWR right at 3775. My rig has no problem matching across the entire band, and the SWR around 3510 or 3990 is just approaching 3:1. I chose to use the stub match, because I had the twinlead handy. Dressing the stub away from the feed line is the biggest drawback I found. Its mounted as a shallow vee, with the apex at about 50 feet, ends at about 30 feet. Just a different method of matching, but its simple and functional. 73, W4KAZ |
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