| Answer | Crossword Clue |
|---|---|
| GARBLE | Scramble, as a signal |
| ALERT | Signal for a scramble. |
| AIRALERT | Signal that starts a scramble |
| ENCODE | Scramble, as a secret message |
| GRABAT | Scramble for, as reins on a galloping horse |
| SENT | Transmitted, as a signal |
| HAIL | Signal, as a cab |
| HAIL | Signal, as a taxi |
| TUNEIN | Receive, as a radio signal |
| CUEIN | Signal as a conductor might |
| COMESIN | Isn't blocked, as a signal |
| EMIT | Give out, as a signal |
