OMA was the callsign of a Czech time signal

Time signal

A time signal is a visible, audible, mechanical, or electronic signal used as a reference to determine the time of day.-Audible and visible time signals:...

 station. The station was operated by the Astronomical Institute of Prague and the transmitters were located at RKS Liblice 1

RKS Liblice 1

RKS Liblice 1 is a facility for commercial longwave transmission located in the Czech Republic about east of Prague near Liblice. It uses as a T-antenna hung up on two tall insulated towers built of lattice steel...

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The station transmitted in the LF

Low frequency

Low frequency or low freq or LF refers to radio frequencies in the range of 30 kHz–300 kHz. In Europe, and parts of Northern Africa and of Asia, part of the LF spectrum is used for AM broadcasting as the longwave band. In the western hemisphere, its main use is for aircraft beacon,...

 band on 50 kHz with a power of 7 kW and in the HF

High frequency

High frequency radio frequencies are between 3 and 30 MHz. Also known as the decameter band or decameter wave as the wavelengths range from one to ten decameters . Frequencies immediately below HF are denoted Medium-frequency , and the next higher frequencies are known as Very high frequency...

 band on 2500 kHz with 1 kW. A reserve LF transmitter was located at Poděbrady

Podebrady

Poděbrady is a historical spa town in the Central Bohemian Region, Czech Republic. It lies on the river Labe 50 km east of Prague on the D11 highway. A historic milestone in the life of the town was the year 1905, when it was visited by the German estate owner Prince von Bülow...

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OMA, which could be also used for synchronizing radio controlled clocks, was shut down in 1995.

External links

• http://www.heret.de/funkuhr/liste.htm
• http://adsabs.harvard.edu/abs/1979RaSc...14..681B
• http://home.zcu.cz/~poupa/oma50.html
• http://www.cl.cam.ac.uk/~mgk25/time/lf-clocks/