Roy Lewallen wrote:
Jim Kelley wrote:
One point: Isn't the input impedance of a dipole normally specified
at a wavelength equal to twice the electrical length of the antenna?
As far as I know, dipoles have infinite DC resistance at zero Hertz. ;-)
As frequency approaches zero, a dipole's input resistance
approaches zero and its reactance approaches minus inifnity. That is, it
looks like a capacitor, and the capacitive reactance gets larger as the
frequency gets lower. Which is just what you'd expect from a couple of
electrically very short wires having no DC connection.
Roy Lewallen, W7EL
I'll give you a Mulligan on that one if you like, Roy. ;-)
73, ac6xg
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