[Lowfer] Need education on Isolation transformers

[Andy - KU4XR]

Ok Gentlemen; 

I will appreciate any and all information. I have  a 160 meter
Windom with the ends going east and west. Connected to the windom
is an 80 meter dipole with the ends going north and south. The
APEX is 32 feet AGL, Feedline is RG59U, 25 feet wound on a 3 inch 
PVC pipe at the feedpoint, and 25 feet wound on 3 inch PVC pipe at 
the shack entrance, total feedline length is 100 feet.

I have searched the internet to a dead end; How do I determine the
Impedance of this antenna setup for 500 KHz, 180 KHz, 137 KHz, for
receive purposes. I can't construct an isolation transformer for the
feedline without knowing the windings ratio. The only thing that I
have found out is that a short dipole will present a high Impedance
and the shorter it is in wavelength, the higher the Impedance.

This is another step in my learning process, I appreciate your
patience greatly.

73 :::



Andy - KU4XR - EM75xr - Friendsville, TN.
LOWfer Beacon " XR " @ 185.29866 KHz ( QRSS-60 )
Coordinates:  N:  35* 43' 54" - W:  84* 3' 16"
http://www.myspace.com/beaconxr
http://webpages.charter.net/ku4xr/