A two way communication is made much quicker, cheaper, and simpler with a Two Way Radio, which is a device capable of transferring as well as receiving at the same time. It works on a dual frequency system. Unlike a broadcast, it is a Transceiver. A very common example of such a device is our very own cell phone. AM (Amplitude Modulation) Radios are another example of this duplex communication, extensively used in Aircraft communications for navigating etc. FM or Frequency Modulation is used in radios, but again this is a one way communication or a ‘broadcast'.
In the same category of FM, the conventional radio types may be Family Radio Service or FRS, but in this case, FM is used for a two way communication, and not merely a
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