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May 28, 2015 · WWV and WWVH continuously broadcast a binary coded decimal (BCD) time code on a 100-Hz subcarrier. The time code presents UTC information in serial fashion at a rate of 1 pulse per second. The information carried by the time code includes the current minute, hour, and day of year.
- What Time is It? FAQs
The announcement of the time occurs at the top of each...
- NIST Radio Stations WWV and WWVH
WWV and WWVH continuously broadcast a binary coded decimal...
- What Time is It? FAQs
- What Frequencies Do WWV and WWVH use?
- When I Listen to WWV Or WWVH, How Accurate Is The time?
- What Other Information Is Broadcast on WWV and Wwvh?
- What Do The Call Letters Stand for?
- How Do I Convert WWV Or WWVH Announcements to My Local time?
- Why Are Both Male and Female Voices Used For The Time Announcements?
- How Does WWVB Set Clocks?
WWV broadcasts on 2.5, 5, 10, 15 and 20 MHz from a location near Fort Collins, Colorado. WWVH broadcasts on 2.5, 5, 10 and 15 MHz from Kauai, Hawaii. Both stations broadcast a timing signal 24 hours per day, 7 days per week, to listeners all over the world. All broadcast frequencies used by WWV and WWVH are in the high frequency (HF) radio spectrum...
The time is kept to within less than 0.0001 milliseconds of Coordinated Universal Time (UTC) at the transmitter site, but the signal is delayed as it travels from the radio station to your location. This delay increases the further that you are from the station, and the delay can vary by as much as 1 millisecond if the signal is bouncing between Ea...
WWV and WWVH broadcast much more than just the time. Please visit the station web pagesto read about the information transmitted by WWV and WWVH.
They are merely a unique combination of letters, just as for a commercial radio or TV station, that meet certain requirements as spelled out in the International Telecommunication Union's Radio Regulations (for example, call letters for U.S. radio and TV stations begin with a "W" or a "K"). Normally, call signs that begin with a "W" are located eas...
The time announced on WWV and WWVH is Coordinated Universal Time or UTC, which is a 24-hour time system based at the prime meridian (0° longitude) located near Greenwich, England. An hour correction must be made to UTC to determine your local time. For example, if you are in the eastern time zone, then subtract 5 hours from the UTC announcement dur...
Since the two stations broadcast on several of the same frequencies, using different voices enables listeners to distinguish which station they are receiving. WWV uses a male voice and WWVH uses a female voice. In areas where both signals are strong, such as California, it is often possible to hear both voice announcements. However, the two announc...
WWVB sets clocks by broadcasting a digital time code on a frequency of 60 kHz. The time code bits are sent by raising and lowering the power of the signal. A radio-controlled clock has an antenna and a radio receiver inside, which decodes the bits to get the time (UTC), day of year, daylight saving time, leap year and leap second indicators. The us...
WWV (radio station) Coordinates: 40°40′47″N 105°2′33″W. WWV Transmitter Building (2002 or earlier) WWV's 15 MHz antenna. WWV is a shortwave ("high frequency" or HF) radio station, located near Fort Collins, Colorado. It has broadcast a continuous time signal since 1945, and implements United States government frequency standards, with ...
Current time zones. Coordinated Universal Time (UTC) is the primary time standard globally used to regulate clocks and time. It establishes a reference for the current time, forming the basis for civil time and time zones. UTC facilitates international communication, navigation, scientific research, and commerce.
Coordinates: 40°40′41″N 105°2′49″W. WWVB is a time signal radio station near Fort Collins, Colorado and is operated by the National Institute of Standards and Technology (NIST). [1] . Most radio-controlled clocks in North America [2] use WWVB's transmissions to set the correct time.
