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:

  • Main scheduled 2015 MSF outage:
    2 - 19 March 2015 from approximately 08:00 UTC to 18:00 UTC each weekday
    (normal transmission should be resumed overnight and at weekends)

  • 11 June 2015 from 10:00 BST to 14:00 BST

  • 10 September 2015 from 10:00 BST to 14:00 BST

  • 10 December 2015 from 10:00 UTC to 14:00 UTC

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 July or August 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

Contact: communications@npl.co.uk

Last Updated: 8 Jan 2015
Created: 28 Jul 2010