Yo,
Doug is having fun with tuning a new antenna near the ground. SWR readings are
off.
Doug and all: I recently helped assemble and install a Cushcraft ASL2010 and we
followed the procedure in the manual.
In part/paraphrased it says: Temporarily mount the antenna vertically, with the
longest element at least 1 foot off the ground on non-conductive surface
(wooden box or similar). Guy the antenna vertical with non-conductive line. (Of
course, you remembered to connect a good length of coax to the feed point
balun)....... Keep the antenna away from other objects, esp METAL/other
antennas. Take your readings with analyzer or the transmitter and SWR meter.
This is what we did. 20 meters was off a little bit, but everything else looked
pretty good. When we got it up on the tower, everything fell into place.
BUT, (there is always a BUT) if you're designing/building a homebrew LPDA,
welllllllllll it should still work, unless your figures/design is way off.
As always, YMMV.
73 es gd luck with the project.
K9WN Jake (NOT an antenna GARU)
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