| DAB |
Digital Audio Broadcast |
| DBS |
Digital Broadcasting by Satellite |
| dBsd |
dB below maximum spectral density |
| DCA |
Dynamic Channel Assignment |
| DCS1800 |
Digital Communication System |
| DCT |
Discrete Cosine Transform Coding |
| DEC |
ECC DECision (CEPT) |
| DECT |
Digital Enhanced Cordless Telecommunication |
| DFSS>/td> |
Digital Fixed Service System |
| DFS |
Dynamic Frequency Selection |
| DFVLR |
Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt (D) |
| DG |
Drafting Group |
| DGLR |
Deutsche Gesellschaft für Luft- end Raumfahrt (D) |
| DGPS |
Differential Global Positioning System |
| DGTP |
Directoraat Generaal Telecommunicatie en Post van het Ministerie van Verkeer en Waterstaat (NL) |
| DLMS |
Digital Land Mobile System |
| DME |
Distance Measuring Equipment |
| DMO |
Direct Mode Operation |
| DMR |
Digital Mobile Radio |
| DPSK |
Differential Phase-Shift Keying |
| DQPSK |
Differential Quadratic Phase-Shift Keying |
| DRM |
Digital Radio Mondiale |
| DRS |
Data Relay Satellite |
| DRTS |
Data Relay and Tracking Satellite |
| DRTSS |
Data Relay and Tracking Satellite System |
| DSBS |
Digital Sound Broadcasting Satellite |
| DSI |
Detailed Spectrum Investigation (CEPT) |
| DSN |
Deep Space Network |
| DSP |
Digital Signal Processor |
| DSRC |
Dedicated Short Range Communications |
| DSRR |
Digital Short Range Radio |
| DSSS |
Direct Sequence Spread Spectrum |
| DTH |
Direct To Home (for satellite TV) |
| DTI |
Department of Trade and Industry (GB) |
| DVB |
Digital Video Broadcast |
| DVB-S |
Digital Video Broadcast – Satellite |
| DVB-T |
Terrestrial Digital Video Broadcast |
| DW |
Deutsche Wetterdienst (D) |
| DWC |
Digital Wireless Communications |
Committee on Radio Astronomy Frequencies