Cecil Moore wrote:
Roy Lewallen wrote:
The theoretical values converge at 214 - j189 ohms, and the measured
values at 218 - j174 ohms.
Free space? As a data point, I pushed EZNEC to the limit on 40m
with a 9000 ft. dipole. Resonant feedpoint resistance at
7.152 is 390 ohms. Anti-resonant feedpoint resistance at 7.092
is 1980 ohms. It appears that EZNEC would converge to something
in between those two values for an infinite dipole in free space.
Forgot to add, EZNEC would also converge to approximately
the same reactance value as above.
--
73, Cecil
http://www.qsl.net/w5dxp
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