I have just finished replacing my 1/4 wave 160-M inverted L, which broke
this winter at the bend. It has 8 ca. 70-foot on the ground radials. I
measured the R and X at the feedpoint with a RigExport AA-55 Zoom, and
the R was 30 ohms more or less across the entire band, while X slowly
converged to resonance above 1900 KHz. My questions are these - is a
relatively flat curve to be expected, or a sign of something wrong? And
is 30 ohms reasonable for an antenna with such a sparse radial field?
All I have at the bottom is a common mode choke, wound of 17 turns of
RG-400 on (I think) a type 43 core
--
73, Pete N4ZR
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