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The radio channel between an amateur radio repeater and an amateur radio operator uses two frequencies often 600 kHz (0.6 MHz) apart. For example, a repeater that transmits on 146.94 MHz typically listens for a ham transmitting on 146.34 MHz. All of these communication channels share the property that they transfer information.
A telecommunications network is a collection of transmitters, receivers, and communications channels that send messages to one another. Some digital communications networks contain one or more routers that work together to transmit information to the correct user.
The word communication has its root in the Latin verb communicare, which means ' to share ' or ' to make common '. [1] Communication is usually understood as the transmission of information: [2] a message is conveyed from a sender to a receiver using some medium, such as sound, written signs, bodily movements, or electricity. [3]
Data communication, including data transmission and data reception, is the transfer of data, transmitted and received over a point-to-point or point-to-multipoint communication channel. Examples of such channels are copper wires , optical fibers , wireless communication using radio spectrum , storage media and computer buses .
A physical medium in data communications is the transmission path over which a signal propagates. Many different types of transmission media are used as communications channel. In many cases, communication is in the form of electromagnetic waves.
Also AM radio or AM. Used interchangeably with kilohertz (kHz) and medium wave. A modulation technique used in electronic communication where the amplitude (signal strength) of the wave is varied in proportion to that of the message signal. Developed in the early 1900s, this technique is most commonly used for transmitting an audio signal via a radio wave measured in kilohertz (kHz). See AM ...
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In communication, media (sing. medium) are the outlets or tools used to store and deliver semantic information or contained subject matter, described as content. [1] [2] The term generally refers to components of the mass media communications industry, such as print media (), news media, photography, cinema, broadcasting (radio and television), digital media, and advertising. [3]