[TowerTalk] Eqn corrected

[David & Barbara Leeson]

Sorry, correct formula for ln(ae) is

ln(ae) = SUM OF [(Ln/h)
O*ln(an)]; subtitute into

Zo = 60 * [ln (2*h/ae) -1] = 60 * [ln(2h) - ln(ae) - 1]

Dave, W6NL

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