Frank - " The wire is suspended about 6 inches above
my west concrete wall which is about 5 feet high. "

Frank - Clarification Please :
Is this the Wire Antenna Element ?
or the Coax Cable Feed-in-Line ?

If this is the Windom Wire Antenna Element ?
then the Antenna itself is only about 5' 6"
above Ground Level.

Question does the Concrete Wall have Re-Bar
(Iron-Metal inside) running through-out it ?
{ A Unified Ground Radial }

i want to know ~ RHF

I've always wondered how this antenna would have performed if the
feedpoint had been in the center as a classic dipole and the xfmr
Z-ratio was different than 1:1. Would this allow some semblance of a
"multiband" antenna as opposed to the direct feed or 1:1 situation
where the antenna essentially is optimum on the primary freq and the
3rd harmonic? Why did I choose the Windom? Because the radio room is
directly across from the 35% length point on the antenna. Even though
it works well I'm not convinced that there is anything "magic" or
unique about the 33 to 35% point on a wire antenna unless there is a
true overall impedance averaging effect when fed at this point. (???)

Frank

So Frank what you are saying is that you built an
Available Space Antenna that Fit the Conditions you
had considering the Lay-Out of your Home and Property.

Hey sometimes we get Lucky and in the end
.. . . what works - Works ! )

enjoy your radios and antennas - iane ~ RHF

wrote:
I've always wondered how this antenna would have performed if the
feedpoint had been in the center as a classic dipole and the xfmr
Z-ratio was different than 1:1. Would this allow some semblance of a
"multiband" antenna as opposed to the direct feed or 1:1 situation
where the antenna essentially is optimum on the primary freq and the
3rd harmonic? Why did I choose the Windom? Because the radio room is
directly across from the 35% length point on the antenna. Even though
it works well I'm not convinced that there is anything "magic" or
unique about the 33 to 35% point on a wire antenna unless there is a
true overall impedance averaging effect when fed at this point. (???)

Frank
----------------------------------
About 10 years ago I experimented 9again) with dipoles for HF.
I tried several different ratios in an attempt to improve recpetion.

I tried a dipole cut for 10MHz and then one cut for 18MHz.
I tried 1:1, 2:1, 3:1, and 9:1.

A 70' "long" wire out performed the dipoles on every frequency, with
every
ratio even on the design frequency with a 1:1.

Of the dipoles, the 2:1 transformer with the 5MHz dipole worked best.
I suspect it worked best because of it's greater length.

The transformers seemed to mainly decouple the coax from the antenna.
If I ever get the time I would like to retry these experiments with
triax or
twinax.

I tried a direct connection with several ferritte cores, but after
reading John
Brynt's excellant article on "Is your Feedline acting like an antenna"
I accept
that I did not have anywehre near enough inductance to supress common
mode effects. I had a LOT of RFI from household devices.

Terry

In article .com,
wrote:

Snip

The other issue is where my "ground" really is here in dry, dusty AZ.
I have dug down over 4 feet in some parts of the yard and there is no
moisture there either! So trying to define a ground is useless also.

Snip

You can always put radials on / in the ground from the antenna ground
point for a counter poise when you have poor ground conductivity.

In your case part of the antenna is a counter poise so you don't need it
but you could give running one under the length of your "Windom" to see
if it makes things better or worse.

--
Telamon
Ventura, California