| Answer | Crossword Clue |
|---|---|
| semaphore | A signal sent by semaphore |
| SOS | Signal sent by Carlsen. |
| PAGED | Sent a signal to |
| OLSEN | His watch sent a signal to contact Superman |
| transmission | A program or signal that is broadcast or sent out |
| transmissions | A program or signal that is broadcast or sent out |
