New member needs ideas

[k2hk]

First off would like to say my first impressions are excellent. I have tried several of the functions and have found information from the comfort of my shack that previously took a lot of time and climbing.

Now the embarrassing part that bares my ignorance. I am overwhelmed with the amount of information that is shown on the graph from a scan. Use of SWR across the frequency range is obvious but how about some of the other parameters. Can someone point out the use of some of these as related to antenna tuning such as theta, Zmag and the equivalent circuits?
Howard..K2HK

[n2kbe]

Theta is the phase angle of the complex impedance. An impedance which is purely resistance (no reactance) will have a phase angle of 0 degrees. If the angle is greater than 0, but less than 90, then the complex impedance will also have inductive reactance. If the angle is less than 0, but greater than -90, then the complex impedance will also have capacitive reactance.

Zmag is the magnitude of the complex impedance (that would be in Polar Form).

I assume you know about SWR and return loss?


I hope this helps alittle...

The equivalent circuits (serial or parallel) is just what the equivalent circuit would look like at that particular frequency (a simple circuit ).