Up in the personnel hatch on Deck 10, there's an emergency transmitter.

After that, he turned to the emergency transmitter.

The crew regained communications through an emergency transmitter after landing.

Once the prosecutor was out of sight, Spock tried the door to the emergency transmitter.

I feel sure we received it only because we were within range of their emergency transmitters.

Fortunately, he had heard nothing from the emergency transmitter.

Only one small device would continue to function, for it possessed its own generator: the emergency transmitter.

They must have got into a rubber boat for we heard weak signals from a small emergency transmitter.

He glanced down at the control panel and saw that the emergency transmitter was still on, beaming out its plea for help.

An emergency transmitter had apparently been spared in the attack.