Reprogram the satellites, have them send the Enterprise's identification signal.

Once again the request to respond to the identification signal remained unanswered.

Most of the radio stations are just putting out weak local identification signals.

If the target fails to respond to the identification signal, it is then declared as a hostile.

He said it came out of nowhere, no identification signals, no visible markings.

For probably the millionth time, it sent its identification signal out to space.

The communicator pinged, and the pilot sent back an identification signal.

He didn't turn on his Friend-or-Foe identification signal to let others track him.

But until the standby comes into action, no identification signal will be transmitted.

There was no answer either to the distress call or to the identification signal.