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Old April 30th 09, 08:20 PM posted to rec.radio.amateur.antenna
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Default Dual-Z0 Stubs

Cecil Moore wrote:
Jim Kelley wrote:
It ignores almost everything about the antenna.


"Antennas", by Kraus, 3rd edition, Standing Wave Antennas


Kraus on the other hand ignores almost nothing about antennas. (for ref.
I'm looking at his 2nd edition.)

Uh, what units did you say your constants k1-k4 had again?


k1 and k3 have the units of current and are the magnitude
of the two standing-wave current phasors on each side of
the coil/stinger junction.

k2 and k4 have the units of degrees/unit-length so when
they are multiplied by x, the result is degrees. Of course,
it could be radians/unit-length.


So the constants in your equations for current on the segments of a coil
loaded monpole a maximum current, wave number, and frequency; and the
linear variables are time, and distance.

Of those things, only maximum current would have any dependence at all
on the nature of the antenna. How does one know what value Imax to
plug-in for each segment?

ac6xg
 
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