11.   The density of the urban landscape makes it difficult for FM signals to travel in the city.

12.   The FCC and some wireless experts have also argued that the jamming signals would inevitably travel outside their intended area, blocking calls that are permitted.

13.   The fiber-optic cable connection between sites allows electronic signals to travel so rapidly, back and forth, that interaction is instantaneous to the eye and ear.

14.   The quality of the service, of course, depends upon how well radio signals travel in your neighborhood.

15.   The signal usually travels through the skin from the transmitter to the receivers with a fairly constant wave pattern and strength.

16.   These higher-frequency signals do not travel nearly so far, but they can carry more information and are less subject to interference.

17.   Voice signals will travel to and from the computer, over the Internet, to IDT offices in the United States and other countries.

18.   For a molecular circuit to really work, researchers need to have a way of managing the way the signals travel.