general/digital-radio
Surf Wiki
S-DMB
Defunct digital satellite TV standard for mobile phones
CAM-D
Proposed AM radio format
Digital audio radio service
US classification for digital radio services
FMeXtra
Obsolete analog-digital hybrid radio broadcasting technology
Digital Audio Broadcasting
Digital radio standard
Digital radio
Use of digital technology to transmit or receive across the radio spectrum
Single Channel Simulcast
Simultaneous transmission of AM and Digital Radio Mondiale signals