Beta (time signal)

Beta consists of the following transmitters:{{cite book |author=Marten, Michael |title=Spezialfrequenzliste 2007/08, band 2 |publisher=Siebel Verlag |language=de |isbn=978-3-88180-665-7 |year=2007 |page=36}}

{{Location map+ |Russia

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{{Location map~ |Russia |coordinates={{coord|44|46|25|N| 39|32|50|E}} |label= RJH63 |position=right }}

{{Location map~ |Russia |coordinates={{coord|54|27|47|N| 26|46|37|E}} |label=RJH69 |position=bottom}}

{{Location map~ |Russia |coordinates={{coord|64|21|29|N| 41|33|58|E}} |label= RJH77 |position=bottom}}

{{Location map~ |Russia |coordinates={{coord|43| 2|29|N| 73|37| 9|E}} |label= RJH86 |position=top }}

{{Location map~ |Russia |coordinates={{coord|56|10|20|N| 43|55|38|E}} |label= RJH90 |position=bottom}}

{{Location map~ |Russia |coordinates={{coord|48|29|29|N|134|48|59|E}} |label= RAB99 |position=top }}

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The time code consists of a series of signals on multiple frequencies. Transmission starts on the hour. Each time a new frequency is selected, there is 1 minute of low power while the transmitter is adjusted, then full-power transmissions begin.

The transmitters are estimated to operate at 1000 kW, achieving 30–50 kW EIRP. (The difference is due to the low efficiency of antennas at this frequency, which must be much smaller than the 12 km wavelength.)

The time code consists of a series of carrier pulses:[http://www.meinberg.de/english/glossary/r.htm Meinberg radio clock glossary: R], see entries for [http://www.meinberg.de/english/glossary/rab-99.htm RAB99], [http://www.meinberg.de/english/glossary/rjh-69.htm RJH69], [http://www.meinberg.de/english/glossary/rjh-77.htm RJH77], [http://www.meinberg.de/english/glossary/rjh-86.htm RJH86] and [http://www.meinberg.de/english/glossary/rjh-90.htm RJH90]

• Each 100 ms, a 25 ms burst of carrier is transmitted
• Each second, a 100 ms burst of carrier is transmitted
• Each 10 s, a 1 s burst of carrier is transmitted
• Each minute, a 10 s burst of carrier is transmitted

The hour or date is not coded.

Most of the stations were built in the 1970s. RJH63 and RAB99, built later, has a different transmission:

• RWM

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• [http://www.vlf.it/trond2/20-25khz.html VLF radio networks information]
• [http://www.vlf.it/russianvlf/russianvlf.htm The Russian VLF time-signal stations, “Beta”], by Trond Jacobsen, with detailed transmission format information.

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Category:Time signal radio stations

Category:Science and technology in the Soviet Union

Category:Communications in the Soviet Union

Category:Soviet Navy

Category:Russian Navy

{{Time signal stations}}

{{Time signal authorities}}