About 1965, long before we had computer modelling, I got to
thinking about tilting the boom of a Yagi to lower or raise the
elevation angle of radiation. This would be really neat for
switching from the SS to the DX Contest mode. I did a literature
search and found the answer in an IRE proceeding from maybe 1935
or so. Someone, possibly Doctor Brown of RCA, had done a bunch
of testing on this already. The bottom line was, tilting the
boom either up or down raised the radiation angle.
George
W2VJN
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