"I could say, a music station streaming on the Net is Not a Radio station, (no TX)"
Data transmitted across the net be it by cable, coax or fibre optic uses RF over a range of frequencies. Data over the mobile networks is transmitted over multiple transmitters. In most houses and businesses most of the internet enabled devices use Bluetooth or WiFi to make that connection. So TXs are everywhere 'Jim, but not as we know it'.

Ray