On Thu, 28 Sep 2006 17:56:43 -0700, Roy Lewallen
wrote:

....
I caution people to take care in extrapolating propagation or antenna
performance results at AM broadcast frequencies to the higher
frequencies more commonly used by amateurs. If done carelessly, it can
lead you to reach some pretty seriously wrong conclusions.

Roy,

A well developed analysis of what happens on MF and HF, and the issues
in extrapolation of MF to HF.

Thank you.

Owen
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