"There are two ends to a communication signal," he said.

There are many ways in which the communication signal may have error introduced into it.

It is possible that these fluctuations are affecting communication signals.

"Their communication signals could have been made deceptively simple for the very purpose of making us curious."

Note the huge amount of communication signals originating from it.

Computer analysis eventually had determined that the wave was in effect a previously unknown variety of communications signal.

They are vocal animals, with a range of alarm calls and communication signals helping to bond groups together.

Successful patrols require clearly understood communication signals among members of a patrol.

She used this to contact the ambassador just a few minutes ago; however, we were able to jam her communications signal.

This distribution system transmitted communication signals via radio along a series of towers.