"MSF Radio Time Signal". National Physical Laboratory. Archived from the original on 2019-07-05. Retrieved 1 May 2022. General and technical information, advice on reception problems, and up-to-date information on signal outages and scheduled maintenance
"MSF 60 kHz Time and Date Code"(PDF). NPL Time and Frequency Services. National Physical Laboratory. July 2007. TAF001v06. Archived(PDF) from the original on 28 July 2008. Retrieved 26 May 2008.
"MSF Radio Time Signal". National Physical Laboratory. Archived from the original on 2019-07-05. Retrieved 1 May 2022. General and technical information, advice on reception problems, and up-to-date information on signal outages and scheduled maintenance
"MSF 60 kHz Time and Date Code"(PDF). NPL Time and Frequency Services. National Physical Laboratory. July 2007. TAF001v06. Archived(PDF) from the original on 28 July 2008. Retrieved 26 May 2008.
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Thomas, Roger (July 2014). "MSF and the NPL". Radio User. Bournemouth UK: PW Publishing Ltd: 47–49. ISSN1748-8117.