airwaves
air·waves
/ˈeɚˌweıvz/ noun [ plural ]
: the signals used to broadcast radio and television programs
The ads have begun to fill network airwaves. [=to appear frequently on network television]
— usually used with the
The ads have begun to fill the airwaves.
The band's new recording hit the airwaves [=was broadcast for the first time] yesterday.
news being broadcast on/over the airwaves