'Your friend; I think he must have brought a jamming device with him.'

He could hear the hiss of a jamming device in operation.

This time, there was no answering hiss of a jamming device.

A Swiss guard said a jamming device had been placed under the platform floor in the chapel.

On his left sleeve was a miniature electronic jamming device.

Nick might also have procured a jamming device for the bugs.

Becker turned up the radio volume, but all he could hear was the jamming device.

Kosov retrieved his jamming device and stepped out of the car.

Every jamming device has an antenna to send the signal.

Once his team is together again, they destroy a jamming device in order to restore communication.