[Antennas] TA32 Update - more puzzling than ever

Mon, 3 Jun 2002 13:28:12 -0000

John
In addition to what George W5YR wrote in his post I would also suggest that
you make up two coax leads as follows 22feet 10 inches and 15 feet 4 inches
with appropriate plugs on both ends. Assuming a velocity factor of 0.66 for
the cable the first lead would be a half wave at 14.2MHz and two half waves
on 28.4MHz. The second lead would be a half wave on 21.2MHz. Using these
on the tree bands to couple the analyser to the antenna would ensure that
you are presenting to the analyser the feedpoint impedence of the antenna at
these frequencies.
At least it is worth a try. Since you seem to be able to put the antenna up
and take it down relatively easily I would put it in its position and check
it through the half wave lines. Good luck with it anyway
Sean EI7CD