On Wed,2/25/2015 5:27 AM, Tom W8JI wrote:
Of interest down here is surface-buried radials down here show
definite standing waves in actual measurements, so it doesn't care
what BL and E measured.
Not only that, but it defies logic that radials would NOT exhibit the
same current and voltage distribution of any other conductor carrying RF
current. The boundary condition is near zero at the end ( "near" because
of capacitance at the end). Rudy Severns, N6LF, has explored this in his
studies of radial systems. Rudy's work includes extensive modeling to
understand and document what he was seeing in measurements of carefully
constructed experimental systems.
I recall seeing at least one study of current distribution in radial
systems published in QST -- something like 20-30 years ago. I found it
as a pdf on the ARRL website about 10 years ago. I remember that it
documented exactly what Tom has observed -- that current varies along
the radial and depending on the soil under the radial.
73, Jim K9YC
_________________
Topband Reflector Archives - http://www.contesting.com/_topband
|