Chuck wrote:
Just as an aside, Owen, have you considered just a single pair of
non-resonant, opposed radials for all bands? The ATU can just as easily
"tune" a single radial pair + vertical element as it can the vertical
element alone.

I have such an antenna and am very satisfied with it.
It is a 22 foot vertical with the feedpoint at 22 feet.
Four 22 foot radials slant down at a 45 degree angle
and double as guy wires. An SG-230 is installed at the
feedpoint.

EZNEC says it has a radiation pattern ranging from
0.5 dBi at 22 deg TOA on 40m to 4.2 dBi at 11 deg
TOA on 10m. Come on sunspots!
--
73, Cecil http://www.w5dxp.com