14-09-2016, 09:20 PM
Some of the younger guys maybe confused about the different between"doublet" and "dipole." The are often used interchangeably now days but in the "old days" a dipole was cut for a single frequency and would be fed with open wire line, electrical twin lead (yes it worked), or if the ham had the dollars to spend, coax.
A doublet was cut for the lowest frequency in use and always fed with open wire line. It would work on all harmonically-related frequencies, but such was the robustness of the coupling between feeder and transmitter the antenna could just be made as long as possible and it would still load OK. If you went to the trouble of measuring SWR then 5:1 was considered perfectly acceptable.
73
Wayne VK4WDM
A doublet was cut for the lowest frequency in use and always fed with open wire line. It would work on all harmonically-related frequencies, but such was the robustness of the coupling between feeder and transmitter the antenna could just be made as long as possible and it would still load OK. If you went to the trouble of measuring SWR then 5:1 was considered perfectly acceptable.
73
Wayne VK4WDM