The BBC network radio time and frequency standard and its role in the provision of Greenwich Time Signal

摘要

An in-house requirement arose to re-engineer timing equipment and provide new facilities for future digital audio projects. A decision was taken to design and procure a time and frequency standard that could generate the Greenwich Time Signal to the same specification adhered to by the Royal Greenwich Observatory (RGO), and provide additional time and frequency facilities. The paper discusses initially the concept of time and time/frequency as used in a broadcast network and follows on to present the details of an engineering solution to the requirements of BBC network radio. The final section of this paper also details a number of applications for time and time/frequency within BBC network radio and regional sites that have been satisfied by the direct and indirect use of this system.