National Physical Laboratory

MSF Outages

MSF Scheduled Maintenance Periods

The MSF 60 kHz standard-frequency and time signal, broadcast by Babcock on behalf of NPL, is occasionally taken off-air to allow maintenance work on the masts and antennas at Anthorn Radio Station to be carried out in safety. This means that your radio-controlled clock will not be picking up the MSF signal, so may not be working correctly.

The dates and times of the forthcoming scheduled maintenance periods are as follows:


  • 13 December 2018 from 10:00 to 14:00

  • 14 March 2019 from 10:00 to 14:00
  • 13 June 2019 from 10:00 to 14:00
  • 12 September 2019 from 10:00 to 14:00
  • 12 December 2019 from 10:00 to 14:00

The shutdowns will take place between 10:00 and 14:00 UTC in December and March, and between 10:00 and 14:00 BST in June and September.

The duration of each outage period will be kept to a minimum, and the signal may be back on-air prior to the times given above.

In addition to these dates, the signal is likely to be taken off-air for a two-day period during spring or summer each year, remaining off-air overnight. The dates of this longer outage will be announced on this page and by e-mailed notices to registered users as soon as they are known.

If you wish to be kept informed about planned outages, please complete and submit the E-mailed Notifications of Scheduled Maintenance Periods form.

Find out more about the MSF Radio Time Signal

Some common problems with radio-controlled clocks


Last Updated: 20 Sep 2018
Created: 28 Jul 2010


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