Richard Fry wrote:

"Cecil Moore" wrote ...
Could it be that the resonant 80 degrees of physical length
is 90 degrees of electrical length?

That a self-resonant, unloaded broadcast radiator length is shorter than
the 90 degree conventional "electrical length" defined by the FCC is a
given. But this reality sometimes is not recognized.

For instance, EZNEC says a 33 ft. vertical made of #30 wire is
resonant on 7.265 MHz while a one foot diameter pipe is resonant
on 6.9 MHz.

Does the FCC define physical lengths or electrical lengths?
--
73, Cecil http://www.qsl.net/w5dxp