| 100% | AIRWAVE | 7 | Radio signal |
| 83% | IONOSPHERE | 10 | Bouncer of radio signals |
| 83% | TRIODE | 6 | Amplifier of radio signals |
| 82% | TUNEIN | 6 | Receive, as a radio signal |
| 81% | TRANSMIT | 8 | Broadcast, send out radio signals |
| 81% | COAXIAL | 7 | Cable for transmitting radio signals |
| 80% | JAM | 3 | Interfere with, as a radio signal |
| 80% | BEAMEDIN | 8 | Came through, as a radio signal |
| 79% | WIRELESS | 8 | Communication system that uses radio signals |
| 79% | SETI | 4 | Grp. sending radio signals into space |
| 77% | ETHER | 5 | What radio signals travel through, with "the" |
| 75% | ANTENNA | 7 | Radio part meant to catch signals |
| 75% | SOS | 3 | Radio telegraphic signals sent by ships |
| 74% | ANTENNA | 7 | Metal wire that allows TV or radio signal reception |
| 73% | JAMMING | 7 | Deliberately blocking radio transmission signals |
| 71% | ANTENNA | 7 | Pointy radio part that catches signals |
| 70% | TELEGRAM | 8 | Formerly, a message transmitted long-distance via electrical or radio signals |
| 70% | TUNEDTO | 7 | Receiving, as a radio station's signal |
| 69% | MAYDAY | 6 | Distress signal in radio communications |
| 68% | MASTS | 5 | Holders of some radio aerials and signal lamps |
| 67% | NOISE | 5 | All but the signal, in radio |
| 66% | ANTENNAS | 8 | Radio-signal rods |
| 64% | SOS | 3 | An emergency signal of distress in radio code |
| 62% | SILENT | 6 | Mapimi ___ Zone, mysterious desert patch in Mexico where compasses or radio signals don't work |
| 62% | ALARM | 5 | Clock-radio signal |
| 58% | TRANSMIT | 8 | Radio towers do this with radio signals |
| 50% | ANALOGUE | 8 | Signal, the predecessor to a digital radio signal |
| 49% | REDALERT | 8 | Danger signal |
| 49% | FLARE | 5 | Distress signal |
| 49% | ALERT | 5 | Danger signal |