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![]() "Highland Ham" wrote in message ... I've never paid attention to the tool they use when they put up the tent at the Charlotte show, but it'll drive a 1 inch solid tent stake through the asphalt parking lot like it's butter. I've never been there to see what they have to do to pull them out when the tent comes down. The stakes sure hold the tent fine. I'd like to drive a ground rod near the point where the coax hooks to the ladder line from my G5RV, but it's next to a large oak tree. I can just imagine what getting through all those roots would be like. ============================== Having followed this thread for some time , my simple question is : Are ground rods really necessary for a good " RF Earth " ? Are buried or elevated radials or an area covered with '(galvanised) wire mesh' not equally effective or even superior ? Frank GM0CSZ / KN6WH Frank For RF purposes, radials or mesh are more effective than ground rods. Radials and mesh form a 'mirror' surface at RF effectively reflecting an image of the elevated antenna radiating element. It is not necessary to actually have a 'good' connection to real earth, just the antenna system. This is why elevated radials can work. The radiating portion of the antenna needs something to 'work' against. So you have two choices, a monopole antenna which can be thought of as working against it's reflection in the earth, or a dipole antenna where each antenna element works against the other. Just about all antennas are variants of these two methods. Mike G0ULI |
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