Standard Time and Frequency Signal Dissemination Services

A Standard Time and Frequency Signal (STFS) Dissemination Service using INSAT system is provided by National Physical Laboratory. This service is available round-the-clock in a broadcast mode and is receivable on a set up consisting of receive antenna, a front-end converter, an FM demodulator and a microprocessor controlled signal decoder. The service consists of a train of 5 KHz bursts signal, which is frequency modulated on the carrier. The time has a precision of better than one microsecond and accuracy of better than 20 microseconds.