| radio sets | Funkgeräte |
| radio shadow | Funkschatten |
| radio shops | Radiogeschäfte |
| radio shows | Funkausstellungen |
| radio signal | Funkspruch |
| radio signalling system | Funkmeldesystem |
| radio signalling systems | Funkmeldesysteme |
| radio signals | Funksignale |
| radio silence | Funkstille |
| radio silence silent period | Funkstille |
| radio sonde | Radiosonde |
| radio sonde balloon | Radiosondenballon |
| radio source | Radioquelle |
| radio spectrometer | Radiospektrometer |
| radio spectrum | Frequenzspektrum |
| radio spectrum policy | Funkfrequenzpolitik |
| radio station | Radiostation |
| radio stations | Rundfunksender |
| radio subsystem | Funkfeststationssystem |
| radio symphony orchestra | Radio-Sinfonieorchester |
| radio systems | Funksysteme |
| radio taxi | Funktaxi |
| radio technology | Funktechnik |
| radio telecontrol | Funksteuerung |
| Radio Telefís Éireann | Radio Telefís Éireann |
| radio telegram | Funktelegramm |
| Radio telegraphy | Radiotelegraphie |
| radio telephone | Funktelefon |
| radio teleprinting | Funktelegrafie |
| radio telescope | Radioteleskop |
| radio telescopes | Radioteleskope |
| Radio teletypewriter | Funk-Fernschreiber |
| radio teletyping | Funktelegrafie |
| Radio Television of Kosovo | Radio Televizioni i Kosovës |
| Radio Television of Serbia | Radio-Televizija Srbije |
| Radio Television Rumantscha | Radio Television Rumantscha |
| Radio Televizioni Shqiptar | Radio Televizioni Shqiptar |
| radio thriller | Kriminalhörspiel |
| radio thrillers | Kriminalhörspiele |
| radio tinker | Radioamateur |
| radio tower | Funkturm |
| Radio Tower Berlin | Berliner Funkturm |
| Radio Tower Gliwice | Sender Gleiwitz |
| radio towers | Funktürme |
| radio tracking | Funkortung |
| radio traffic | Funksprechverkehr |
| radio traffic service | Verkehrsfunk |
| radio transceiver | Funksprechgerät |
