for what LCR circuit use in radio ststion?

In a radio station there is LCR circuit connected in a series circuit. The LCR circuit has own frequency of tune in a radio station. Then at a particular fixed point the tune frequency of LCR circuit is same as the natural resonance frequency of radio tune. The two resonance tune of LCR and radio tune is also mixed with each other at a fixed point this is the frequency of the radio station. In this way we listen a radio tune in a fixed point.