![]() ![]() My J-Poles have been tested to 500 watts without issue and there is no reason why they couldn’t go the full legal limit of power if need be. More efficient radiation also means that you can run higher powers with a copper antenna than with other building materials. The increased electrical efficiency means more of your RF energy will go up and out the antenna and not be trapped, creating heat energy. With copper being twice as conductive as aluminum and 6 times more conductive than steel, it makes an excellent choice as an antenna material. Table from the Electrical Conductivity of Metals. Having high conductivity combined with a ductility that makes it easy to draw down to close-tolerance diameters, it can also be readily soldered to make economic, durable connections. Weight for weight, outside of precious metals, copper is the best conductor of electricity and heat, it is hardly surprising that about 60% of total copper use is for these purposes.Ĭopper is used in high, medium and low voltage power networks, and copper conductivity is considered to be the standard to which other conductors are compared.Īluminum cables are being replaced with copper ones, because copper conductivity is twice that of aluminum, making copper cables extremely energy efficient, thus helping reduce energy consumption on a global level.Ĭopper wire has long been the preferred conductor material in the majority of cables used for power and telecommunications. You can imagine what an antenna built out of silver would cost. ![]() In fact about the only common element that is more conductive than copper is silver. One thing that makes copper an outstanding choice for antennas is that it is a very efficient conductor of electrical energy. ![]()
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