Dipole and Inverted V Antenna Basics


One of the first antennas I rebuilt after the passing of Tropical Storm Iselle (o7-08 August 2014) was my trusty 80-10 meter inverted v.  The previous inverted v was torn up badly by 60-65 mph winds from the storm.  I managed to salvage most of the 450 ohm ladder line and a good portion of the antenna segments.  While I was researching for better ways to “harden” my wire antennas, I came across this helpful article by Dave Tadlock on the construction, mounting, and tuning of dipole and inverted v antennas.  While I incorporated much of Dave’s ideas, I elected to keep the inverted v as a multiband antenna, covering 80 through 10 meters.  With 450 ohm ladder line fed into a 4:1 current balun and using a short length of RG-8X coax to connect the balun to my trusty Drake MN-4 transmatch or the standby MFJ 941-E Versa Tuner II, I had an antenna capable of serving these amateur radio bands.  Each antenna element was 67-feet/20.42 meters long, giving me resonance at approximately 3.500 MHz.  With the ladder line, balun, and transmatch combination, I was able to get a 1:1 SWR on all amateur radio bands between 80 and 10 meters.  Dave’s video is well organized and loaded with many valuable hints.

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Until next time,

Aloha de Russ (KH6JRM).

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