![]() The 60 kHz signal is located in a part of the radio spectrum called LF, which stands for low frequency. Your radio controlled clock actually has a miniature radio receiver inside, which is permanently tuned to receive the 60 kHz signal. WWVB broadcasts on a frequency of 60 kHz. In the United States, the signals received by radio controlled clocks originate from NIST Radio Station WWVB, which is located near Fort Collins, Colorado. A radio controlled clock has a radio inside, which receives a signal that comes from a place where an atomic clock is located. An atomic clock has an atomic oscillator inside (such as a cesium or rubidium oscillator). Some manufacturers refer to their radio controlled clocks as "atomic clocks", which isn't really true. This page provides information about radio controlled clocks, including how they work, where they work, and what to do when they don't work. During the transition from standard time to daylight saving time (DST) they "spring forward" one hour, and when DST is finished they "fall back" one hour.ĭue to technology advances and the economies of scale, radio controlled clocks are now very inexpensive, often costing just a few dollars more than conventional clocks. This means that you should never have to adjust them. They have a tremendous advantage over conventional clocks, they are always right! When working properly, radio controlled clocks always display the correct time, down to the exact second. These clocks are sold in all forms: as wall clocks, desk clocks, travel alarms, and wristwatches. How They Workīy now, you have probably seen or own a radio controlled clock. You may also receive a printed copy by kathryn.stephenson (subject: Please%20send%20me%20a%20copy%20of%20SP960-14) (sending your mailing address) or by calling (303) 497-4343. WWVB Radio Controlled Clocks: Recommended Practices for Manufacturers and Consumers (NIST Special Publication 960-14, August 2009) To find out more about WWVB radio controlled clocks, please download this 64-page PDF booklet: WWVB 2017 Antenna Configuration and Power Outages.WWVB 2018 Antenna Configuration and Power Outages.WWVB 2019 Antenna Configuration and Power Outages.WWVB 2020 Antenna Configuration and Power Outages.WWVB 2021 Antenna Configuration and Power Outages.WWVB 2022 Antenna Configuration and Power Outages.WWVB Antenna Configuration and Power Expand or Collapse.WWVB Station Outages Expand or Collapse.7.5.2 alarm settings for full week, work week, weekend or custom app settings with separate wake times/ alarm sources to suit your lifestyle. “Slowly increases wake volume and decreases sleep volume to allow a gentle experience.”ĭual alarm with weekday/weekend/custom alarm settingsĢ independent alarms let you wake to iPad, iPhone, iPod, custom playlists, FM radio or buzzer. Lets you sleep in a little or a lot with snooze time between 1 and 29 minutes Specially designed sealed speaker enclosures deliver astounding clarity, depth and power Start or end your day just the way you want it to soundĬharges and plays iPad mini, iPad (4th generation), iPhone 5 or iPod Wake or sleep to iPod, iPhone, iPad, custom playlist, FM radio Universal USB port for iPhone 5 and legacy Apple devicesĬharge and play both Lightning and 30-pin powered iPad, iPhone and iPod models using the cable included with your device
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