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2. Radio clock - Wikipedia

   en.wikipedia.org/wiki/Radio_clock

   Radio clocks may include any feature available for a clock, such as alarm function, display of ambient temperature and humidity, broadcast radio reception, etc. One common style of radio-controlled clock uses time signals transmitted by dedicated terrestrial longwave radio transmitters, which emit a time code that can be demodulated and ...

3. Kienzle Uhren - Wikipedia

   en.wikipedia.org/wiki/Kienzle_Uhren

   They also developed the world's first radio-controlled atomic alarm clock with an analogue alarm setting. In 1996, a new radio-controlled movement was developed: the smallest dual-motor, radio-controlled movement with the fastest setting system. This movement corrects to the right time within five minutes. [8]

4. Alarm clock - Wikipedia

   en.wikipedia.org/wiki/Alarm_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.

5. Radio controlled clock - Wikipedia

   en.wikipedia.org/?title=Radio_controlled_clock&...

   Retrieved from "https://en.wikipedia.org/w/index.php?title=Radio_controlled_clock&oldid=141065089"

6. La Crosse Technology - Wikipedia

   en.wikipedia.org/wiki/La_Crosse_Technology

   La Crosse Technology introduced the radio-controlled clock, commonly (but incorrectly) called an "atomic clock" after the extremely accurate timepiece behind the radio signal it uses as a reference, into the United States commercial market in 1991. [3] [4] In 2004, the company was awarded a license to sell The Weather Channel branded weather ...

7. DCF77 - Wikipedia

   en.wikipedia.org/wiki/DCF77

   Consumer grade radio clock movement with the DCF77 receiver (right) in the clock. The small ferrite loopstick antenna used in this alarm clock can be seen at the left. Due to the propagation process, phase and/or frequency shifts observed in received signals the practical obtainable accuracy is lower than originally realized with the atomic ...