4 ms·

There are several of these stations, they are maintained and operated by NIST. Two of them were almost shut down recently due to budget concerns: https://www.r

by 2four2 2y ago

There are several of these stations, they are maintained and operated by NIST. Two of them were almost shut down recently due to budget concerns: https://www.radioworld.com/global/why-wwv-and-wwvh-still-matter https://www.radioworld.com/global/why-wwv-and-wwvh-still-mat...

dfc 2y ago
In April one of the two WWVB antennas failed (broke) because of 90mph winds. https://www.nist.gov/pml/time-and-frequency-division/time-distribution/radio-station-wwvb/wwvb-station-outages https://www.nist.gov/pml/time-and-frequency-division/time-di...
- Eduard 2y ago
  https://www.nist.gov/pml/time-and-frequency-division/time-distribution/radio-station-wwvb https://www.nist.gov/pml/time-and-frequency-division/time-di... > Official Notice: Commencing from 0000 Coordinated Universal Time (UTC) on April 7, 2024, the southern antenna of WWVB has been rendered non-operational due to damage sustained from wind gusts exceeding 90 MPH. Please be advised that WWVB continues to function at a diminished overall power, utilizing only its northern antenna. > Update 20 May 2024: The components necessary for the refurbishment of the southern antenna’s triatic are currently being manufactured and shipped. The projected timeline for the completion of these repairs is tentatively set for the latter part of June 2024. We would like to emphasize that this is an estimated timeline and may be subject to alterations based on a variety of factors. We greatly appreciate your understanding and patience during this process. Can someone using WWVB radio clocks describe what the current situation is? Is the second working antenna strong enough to provide signals throughout the US / North America? Are WWVB radio clocks popular at all? Here in Europe, DCF77-based clocks are popular, especially with respect to automatic summer time adaption and (less obvious) leap second HANDLING. It would be very noticeable eventually if the DCF77 signal had severe issues. Also, I'm very surprised about the abysmal historical uptime of Wwvb. It lists thirteen downtimes of more than 5 minutes each in 2023 alone.
  - lxgr 2y ago
    Given that most clocks listen for it about once per day, if that, to save battery, and in my experience even then only manage to catch the signal every couple of days, high continuous availability doesn't really seem to be a concern.

by 2four2 2y ago

dfc 2y ago

In April one of the two WWVB antennas failed (broke) because of 90mph winds. https://www.nist.gov/pml/time-and-frequency-division/time-distribution/radio-station-wwvb/wwvb-station-outages https://www.nist.gov/pml/time-and-frequency-division/time-di...

Eduard 2y ago
https://www.nist.gov/pml/time-and-frequency-division/time-distribution/radio-station-wwvb https://www.nist.gov/pml/time-and-frequency-division/time-di... > Official Notice: Commencing from 0000 Coordinated Universal Time (UTC) on April 7, 2024, the southern antenna of WWVB has been rendered non-operational due to damage sustained from wind gusts exceeding 90 MPH. Please be advised that WWVB continues to function at a diminished overall power, utilizing only its northern antenna. > Update 20 May 2024: The components necessary for the refurbishment of the southern antenna’s triatic are currently being manufactured and shipped. The projected timeline for the completion of these repairs is tentatively set for the latter part of June 2024. We would like to emphasize that this is an estimated timeline and may be subject to alterations based on a variety of factors. We greatly appreciate your understanding and patience during this process. Can someone using WWVB radio clocks describe what the current situation is? Is the second working antenna strong enough to provide signals throughout the US / North America? Are WWVB radio clocks popular at all? Here in Europe, DCF77-based clocks are popular, especially with respect to automatic summer time adaption and (less obvious) leap second HANDLING. It would be very noticeable eventually if the DCF77 signal had severe issues. Also, I'm very surprised about the abysmal historical uptime of Wwvb. It lists thirteen downtimes of more than 5 minutes each in 2023 alone.
- lxgr 2y ago
  Given that most clocks listen for it about once per day, if that, to save battery, and in my experience even then only manage to catch the signal every couple of days, high continuous availability doesn't really seem to be a concern.