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beacon	a radar or radio transmitter that emits radio waves at fixed intervals to provide navigational guidance. [1/7 definitions]
cell phone	a mobile telephone that operates using radio signals and therefore requires no wires. A cell phone is part of a system composed of many low-power radio transmitters located in "cells" across a region and will receive a radio signal from whichever transmitter in the system is closest; cellular phone.
cellular phone	a mobile telephone that operates using radio signals and therefore requires no wires. A cellular phone is part of a system composed of many low-power radio transmitters located in "cells" across a region and will receive a radio signal from whichever transmitter in the system is closest; cell phone; mobile phone.
ham²	a licensed amateur operator of a radio transmitter. [1/3 definitions]
handset	a telephone with the receiver and transmitter contained in a single hand-held unit.
lead-in	the section of a radio or television antenna that connects to the transmitter or receiver. [1/3 definitions]
mobile	(chiefly British) a mobile telephone that operates using radio signals and therefore requires no wires. A mobile is part of a system composed of many low-power radio transmitters located in "cells" across a region and will receive a radio signal from whichever transmitter in the system is closest; cell phone. [1/6 definitions]
modem	an electronic apparatus that enables data to be processed for transmission from or into a computer by use of telephone or other transmitter.
transmission	the sending of radio waves from a transmitter to a receiving station; broadcast. [1/4 definitions]

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