By turning off sensitive electronic circuits before a storm, damage to satellite transmitters, and the resulting disruption, could be minimised.

Larger birds, such as storks, have been tracked by fitting satellite transmitters, but they are too heavy to attach to tiny birds such as the nightingale.

They would have had to switch off instruments, including the satellite transmitters, but might still have found time to punch the co-ordinates of the nearest airport into the navigation system.

They did so after tagging 20 emperor penguins with satellite transmitters in 2013 to track their feeding routines.

Overlaid on the footage are red bars representing the news being broadcast between satellite transmitters worldwide.

Provision was also made for a wireless transmitter, receiver, and operator.

They can be programmed to open and close with a wireless transmitter or a manual device.

The observer, suspended in the wicker basket beneath, typically had a wireless transmitter, binoculars and/or a long-range camera.

Zone control uses a wireless transmitter to transmit a signal in a fixed area.

It had an auxiliary diesel motor as well as a wireless transmitter.