On Mon, 22 Mar 2004 17:10:02 -0800, Jack Twilley
wrote:
Actually, my goal is for the antenna to be resonant at 7.150. If it's
resonant too low, then I need to shorten the wires even more, right?

Hi Jack,

Resonance is not all that it is cracked up to be. Be careful of
seeking something that yields little return on your effort.

For instance, the numbers you've offered show a very low Z for that
anticipated goal. This means you will still need to transform that
value to reduce SWR, which in its own pursuit is an equally low yield
return.

You will need a tuner any way you look at it, and the higher R values
at the higher frequencies are probably more due in part to the loss of
nearby ground, rather than the miracle of a neighboring resonance.

My guess is that you have already obtained an optimal situation = it
don't get any better than this even with all the trimming you may
accomplish. Worse, you could double its height and contacts may never
notice the improvement in "efficiency." Basically all your work is to
achieve bragging rights, and you could cheat and start bragging right
now to no one's challenge.

73's
Richard Clark, KB7QHC