On Jan 23, 11:10*am, "amdx" wrote:
I put up a long wire antenna, it is an inverted C.
The antenna is resonant at 3.55 Mhz.
I want to characterize it an the AM broadcast band.
*I have made a measurement at 500 Khz and I had to install a parallel
capacitor
to get my variable inductor to bring phase to zero.
*I don't know how to do the math to find the impedance of the antenna
with the L and C in the circuit.
*Can someone look at my drawing and give me the math so I can figure out
the impedance. Then I can get the numbers at other frequencies for the band
and calculate those impedances.
See drawing here. I want to calculate the Unknown Impedance.
*I need the R and the C of the antenna.http://i395.photobucket.com/albums/p...naat500Khz.jpg

* * *Thank you, Mikek

The Smith Chart says about 178+j521.

Gary N4AST