Amateur radio operators are not using these large wire antennas in current-day operations. I have been successful in building a number of these over the past few years, these antennas are optimized for 40 meters and above. See my call on qrz.com then type in the call K0UO for more information and photos. Each Rhombic antenna uses over 1/2 Mile of 3/8" cable. They are erected on 100 foot wooden utility poles, also the site has two large Vee Beam antennas which are over 1200 foot long each. Build Them and the DX will Come!