Others that are using the King of antennas, In the 1950s to 1970s W6AM had many 1000 footers and one was 1500 ft (in fact the main E/W is using parts from W6AM's farm). TF4M put up a larger one at one time, and Roy W7YRV/SK had nine at one time and he developed the X Rhombic, which he had one for every 20 degrees. That was a truly remarkable accomplishment for an amateur station (You must see his page, great info w7yrv.blogspot.com/2013/). It was an extreme pleasure for K0UO to meet Roy, even in his 90's, he was still an encyclopedia of knowledge when it comes to very high gain antennas. K0UO is very privileged that W7YRV has entrusted him with the schematics, drawing, and photos of these fabulous antennas. W1VDE Roger in OR has six and is on the air daily, alsoVK3MO, ZL6QH, and in Texas N5APR and W5BY Jeff, had a few at their ranch's, KL7KK in AK has one along with a few VK's, and V55V (V55W) in Namibia had 2, but they are now down. VK3MO Ian also has a stacked rhombic antenna with 8 wavelengths on a leg giving a total of 1340m of radiating wire. The upper rhombic is at 40M and the lower rhombic is at 21M. The rhombic had a gain of 23dBi at a take off angle of 5 degrees on 20M and is directed at New York. The rhombic was modelled using EZNEC and it has 3dB more gain than the 5/5/5/5 yagis Both the yagis and the rhombic have a take off angle of 5 degrees which allows a comparison between the two antennas in the direction of New York. Ian sees see the 3 dB advantage which validates the accuracy of the NEC antenna modelling software.
Below, THE ARRL OLD ANTENNA LAYOUT 1937, FROM QST
W6AM 1946 antenna layout below
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