| Answer | Crossword Clue |
|---|---|
| ALFA | Signal-code word |
| DAH | Code signal |
| SOS | Code signal. |
| WIGWAG | Signal code. |
| DIT | Code signal |
| DIT | Morse code signal |
| DAH | Morse code signal |
| DAH | Morse-code signal |
| DIT | Morse-code signal |
| DAH | Morse code signal. |
| SOS | Radio code signal. |
| SOS | Morse code signal. |
| DASH | Signal in Morse code. |
| SOS | Code signal akin to mayday (m'aidez). |
