Allan Jeal wrote:
After trying verticals, loops and dipoles I was ready to give up. Then I
remembered a thing called a Vipole that was lying on the garage rafters. I
paid hundreds of dollars for it but I could never make it work. It is a V
with two lightweight fiberglass whips that each have an inductance coil half
way along their length. They are marked 7Mhz (12' roughly) and 14Mhz (9'6"
roughly). (((The original design stipulated that the whips feed into a Balun
and then an UnUn transformer, and then use coax down to the rig))).

OK, I think I've got it. Although the autotuner will probably
tune the system, the 20m element will probably be an inadequate
counterpoise on 40m and the 40m element may develop a lossy
self-resonance below 14 MHz. A 40 ft. dipole with the tuner
in the middle would probably outperform what you have in mind.
But that's just my opinion which is what you asked for. Don't
let me discourage you from experimenting.
--
73, Cecil http://www.qsl.net/w5dxp