"Fred PA0FVH" wrote in message
...
Dear group,

As a temporarily solution I would like to use a cheap 5/8, 6/8 or 7/8 WL
commercially available CB antenna as a non resonant vertical with elevated
radials for use on 10 - 40 meters tuned by an automatic remote ATU at the
base of the antenna. I used MMANA and EZNEC (demo) to calculate the
expected impedance for the frequency range and found too many results for
the height of the antenna. Now I am confused about what to select.
Is 5/8WL on 10meters a good height or 8 meter (22')?
What I want is a low take off angle on 20 and 30 meters with high
efficiency and an impedance which my remote ATU can handle.

Fred, PA0FVH

Hi Fred,
The first thing to understand is that for the most part the CB 5/8, 6/8, 7/8
antennas have nothing to do with the actual height. Manufacturers started
claiming these lengths because the CBers believe(d) longer is better. At
least for the mobile antennas the 5/8 etc referred more to the length of the
wire used in the antenna- electrically, they were all 1/4 wavelength
antennas.

Dale W4OP