airwaves
noun [ plural ]
uk/ˈeəweɪvz/ us COMMUNICATIONS
radio waves that are used for broadcasting radio and television programmes, and sending mobile phone, etc. signals, also used to refer to radio or televison broadcasting time:
In order to improve access to broadband, the government cleared the way for an auction of airwaves best suited to wireless data.
The campaign flooded the airwaves with a series of TV ads.