Just a thought ..
Place any small LF antenna located on very dry, low conductivity ground such
as desert or non conductive rock with no trees etc nearby. With a good
groundplane installed of thick copper wire out to several times the maximum
dimension of the antenna, then won't the losses be only those due to the
copper and loading coil ? In other words, consider the grounplane and
antenna together as one entity and have no other lossy materials nearby.
Could this contribute to the apparent reported sucess of the CFA when used
in desert - not that the CFA was good, just that the conventional vertical
it was tested against was poor.
Andy G4JNT
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