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A radio clock or radio-controlled clock (RCC), and often colloquially (and incorrectly [1]) referred to as an "atomic clock", is a type of quartz clock or watch that is automatically synchronized to a time code transmitted by a radio transmitter connected to a time standard such as an atomic clock.
A mid-1940s alarm clock radio with AM radio stations only A typical 1980s clock radio featuring a digital clock/alarm and an analogue FM/MW/LW receiver. A clock radio is an alarm clock and radio receiver integrated in one device. [18] The clock may turn on the radio at a designated time to wake the user, and usually includes a buzzer alarm.
A "Wave Radio/CD" model was introduced in 1998 and was essentially a Wave Radio I with a CD player. The end of the waveguides were tapered by 2%. [ 7 ] Unlike the Acoustic Wave, the Wave Radio could be used as an alarm clock radio, and featured two independent alarms, which could be set to A/M or F/M radio, a buzzer, or a device plugged into ...
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Free-space path loss. In telecommunication, the free-space path loss ( FSPL) (also known as free-space loss, FSL) is the attenuation of radio energy between the feedpoints of two antennas that results from the combination of the receiving antenna's capture area plus the obstacle-free, line-of-sight (LoS) path through free space (usually air). [ 1]
Clock signal and legend. In electronics and especially synchronous digital circuits, a clock signal (historically also known as logic beat) [ 1] is an electronic logic signal ( voltage or current) which oscillates between a high and a low state at a constant frequency and is used like a metronome to synchronize actions of digital circuits.
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