1. The radio is giving out a strange signal.

2. The signal will be converted into digital code.

3. Signal lights on cars have edged out hand signals.

4. When I give the signal, run!

5. The driver misread an important signal.

6. A radio signal was sent to the spacecraft.

7. When she gave the signal, they all cheered.

8. The railway signal showed that the train could pass.

9. The tourists signaled the driver to pull over.

10. We signalled him to pull over.

11. At an agreed signal they left the room.

12. That idiot changed lanes without signalling.

13. This train stops to let off passengers on signal.

14. Then the rain came and the red flag went up to signal a halt.

15. They suffered from nervous tension when the signal was shown on a radarscope.http://

16. Laughing when you should be crying sends out the wrong signals to people.

17. The smoke signals from the central bank suggest further cuts are coming.

18. In a forest, wet wood and needles attenuate the signals.

19. In 1880 Alexander Graham Bell was granted a patent on an apparatus for signalling and communicating called a Photophone.

20. All I get is a busy signal when I dial his number .

21. " This's signaler in quality, but cheaper. "

22. In this paper, The improvement on old speed signaler is described by dissecting some development process of a new-type ZX-5B1 speed signaler in detail.

23. Zahavi's handicap principle - This principle states that in order to be honest, a signal must be costly to the signaler.

24. Batesian mimicry - In this type of mimicry a harmless signaler imitates a dangerous one.

25. These signals are then acted on by natural selection to minimize risk to the signaler.

26. CDI provides three compact and powerful permanent magnets for use with the CD52 Bandit Non-Intrusive Pig Passage Signaler.

27. Zahavi's handicap principle states that an honest signal must be costly to the signaler, meaning that only fit individuals can signal honestly.

28. Representational information - Information about the environment external to the signaler.