On Wed, 25 Jul 2007 16:20:52 +1200, cliff wright
wrote:

Any ideas gratefully received!

Hi Cliff,

Strip out all the extraneous material like caps and inductors (however
they are applied) and simply drive the vertical against your four
radials. Tell us where it resonates, and give us a few SWR readings
around that point (plus/minus 250 Khz in 50 Khz increments).

Do you have the transmission line choked at the feedpoint?

73's
Richard Clark, KB7QHC