Handset
Manual
Walkie-Talkie
Radar system
satellite system
Loudspeaker
Compact easily transportable battery-operated radio transmitting
Part of the phone that is held up to speak into and listen to
Introduction booklet
Electromagnetic sensor used for detecting, locating, tracking and recognizing objects at considerable distances
Communication broadcast technology used for ship-to-ship communication and position identification
Apparatus that converts electrical impulses into sound