Jim, you may well find that the resonant frequency as well as impedance of
your dipole increases as you raise the height above ground. Ground moisture
and resulting conductivity and dielectric constant changes have quite an
influence on both impedance and frequency.
73,
Gerald K5GW
In a message dated 2/20/2013 4:48:17 A.M. Central Standard Time,
jim.thom@telus.net writes:
>Lets get practical for once.
Yes, let's do. That starts with studying and understanding the
fundamentals of transmission lines and antennas, understanding that
every design problem is different, and that one size does not fit all.
As I observed in yesterday's post, low dipoles are generally a closer
match to 50 ohm coax, and high dipoles to 75 ohm coax.
73, Jim K9YC
## I will try and attempt to test that high/low dipole theory out, next
summer
with my 80m rotary dipole on its motorized tower. 40 feet retracted, and
103’
extended.
Jim VE7RF
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