https://joy.videvo.net/videvo_files/video/free/2014-12/large_watermarked/Radio_Broadcasting_OnAir_Light_SIDE_preview.mp4 Radio Broadcasting: A close-up side shot of a radio "On-Air"" light turning on and off outside of a vocal booth." 1080paudiobroadcastingcueequipmentheadphonesindustrylightlivemediaon-airperformanceproductionradiorecordingtechnology