Reg Edwards wrote:
Cec, if you divide the well-known 377 ohms by 5.164, which is the
square-root of 26.67, you get precisely 73 ohms.

But, but, but, Reg, you said the feedpoint impedance of
an infinite dipole is 1200 ohms, or some such. That's
very close to 377 ohms times pi.
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73, Cecil http://www.qsl.net/w5dxp