Radio Transmissions

DTS can obtain time from a radio time source. Commercial receivers that monitor time and frequency broadcasts can return time values through the TPI to the DTS server. The NIST operates the following U.S. time and frequency stations:

· WWV
Transmits at 2.5, 5.0, 10.0, 15.0 MHz to North America and South America.

· WWVB
Transmits at 60 kHz primarily to the United States, providing high-quality frequency information because atmospheric propagation effects are relatively minor.

· WWVH
Transmits at 2.5, 5.0, 10.0, 15.0 MHz to Alaska, Hawaii, Australia, New Zealand, Japan, and Southeast Asia.

The following stations are available in Europe:

· MSF
Broadcasts from England at 60 kHz.

· DCF77
Broadcasts from Germany at 77.5 kHz.

In addition to the stations previously listed, more than 30 radio stations worldwide provide UTC time. Consult the national standards organization in your country for further information.