Wireless tuning and filtering

capacitor whose capacitance may be intentionally and repeatedly changed mechanically or electronically

frequency selection subsystem for various receiver systems

type of electronic inductor

type of radio antenna

radio circuit

passive component (choke) that suppresses high frequency noise in electronic circuits

radio electronic device

Radio receiver with amplifier stages and a detector

oscillator whose frequency can be tuned over some range

Magnetic device

electronic filter

class of electronic filter

type of electronic filter

dielectric material that functions as a resonator for radio waves