The term RADIO KNOB is composed of five crossword solutions: DIAL (4 letters), VOLUME (6 letters), FADER (5 letters), TUNER (5 letters), and TENOR (5 letters). A radio knob is a device used to control the various functions of a radio, such as the VOLUME, tuning, and sound quality. The DIAL is used to select a station, the VOLUME knob adjusts the loudness of the sound, the fader adjusts the balance between the left and right speakers, the TUNER adjusts the frequency of the radio signal, and the TENOR adjusts the tone of the sound.