[OKDXA] Impedance Bridge?

[Kim Elmore]

Does anyone near Norman have an impedance bridge I could use? I need 
to figure out what the feed impedance is of my short, shunt-fed 
tower. I have a Palomar noise bridge, but the reading I get from it 
is nonsense: 65 + j685 ohms. The sign that cannot be right, because I 
know that the resonant frequency is ~ 9.5 MHz.  Since I want to make 
an L-network to match it, I need to know what the feed impedance is 
so that I can build what I need.

Whatever the impedance is, it's way out there. My Ameritron ATR-15 
cannot match it at the low end of the band and neither can the 
built-in tuner in my Orion II.

Kim Elmore, N5OP