Amateur radio operators often forget that a feedline or transmission line has an effect on the vector impedance of the antenna it serves. If the antenna is resonant (50 + j0 Ohms) for the input frequency, then any length of coax is irrelevant. But if the antenna vector impedance is something else (which it ALWAYS is) then the transmission line affects it. This presentation examines a commercially available mag mount antenna manufactured explicitly for use in the amateur allocated 2-meter band. We look at what it takes of optimizing it to actually achieve a true 50 + j0 Ohms vector impedance.
In this presentation we have gone to great lengths to not present the technical mumbo-jumbo behind all of this. However, for those interested in punishing themselves…us, I mean probing for deeper detail, the full report is available on this club blog site here.