if the most resonant one is not the one you want, that would be a noise you have to filtered. Which is where the tuned-circuits of the radio's front-end come i

if the most resonant one is not the one you want, that would be a noise you have to filtered. Which is where the tuned-circuits of the radio's front-end come into play. In a sense the locations of the tuned circuits are not especially critical, in that the tuned-circuit filtering can be at the antenna itself, at the radio-frequency amplification front-end stage, or even at the intermediate-frequency amplification stage. In really good radios you would find tuned-circuits in all of those locations to increase the level of wanted signals and the attenuation of unwanted signals.