https://joy.videvo.net/videvo_files/video/free/2014-12/large_watermarked/Radio_Broadcasting_Board_Mic_Button_preview.mp4 Radio Broadcasting Mic Button (Close) A close-up of the mic being opened, the fader being adjusted, and the mic being closed again on a professional broadcasting mixer board. 1080paudioboardbroadcastbroadcastingbuttonbuttonscuefaderlivemediamicmixeroffonproductionprofessionalradioredswitchtechnology