(under subclass 47) Subject matter wherein the switch type tuner is constructed so as to have a contact terminal or plate which is adapted to contact or approach a second terminal or plate held on a stationary portion of the tuner unit, the contact terminals or plates of the tuner being constructed so as to allow a rocking movement between the movable and stationary contacts, thus varying the resonant frequency of the tuned circuit without breaking electrical contact between the stationary and movable contacts.