On Wed, 28 Dec 2005 21:37:05 -0800, dansawyeror
wrote:

Owen,

Thanks for the example. I do not have an impedance meter. I do have a vector
voltmeter that will read the phase and value of the reflected signal.

The core problem is: How to measure and improve the performance of a loaded
vertical. The unknowns are the value of ground and antenna resonance.

Setting the coax to a 1/4 wave multiple was a way to remove its phase altering
characteristics from the reflected signal at a frequency of interest. That seems
to be working and is predictable to measure the 1/4 wave odd, open circuit,
resonant points, etc. This simply proves consistent measurement and correct
identification of the electrical cable length.

You're making this way too complex (pun intended).. Why not just
connect the coax to the bridge and put your open-short-load standards
on the far end and do the calibration?

Or move the instrument out in the field?

For example:

http://users.triconet.org/wesandlinda/Field_8405_a.jpg