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mercoledì 5 luglio 2017

CHECKING THE RUSSIAN BETA VLF FREQUENCY AND TIME NETWORK STATION RJH69

Following the posts at the links :

http://air-radiorama.blogspot.it/2017/06/daily-recurrent-ladders-in-vlf.html

http://air-radiorama.blogspot.it/2017/06/the-solution-daily-recurrent-ladders-in.html

https://air-radiorama.blogspot.it/2017/06/following-posts-at-links-httpair.html

I have recorded and demodulated the first pattern that occurs daily at 9:00 UTC , the stronger one .

The CW identification ,transmitted fast for a minute, is : RJH69 that is the nearest station in Belarus .
Time sequence and other modulations was found accordinghly to the good document at :

http://www.vlf.it/russianvlf/russianvlf.htm

The following spectrogram tells much more than descriptions :




Here the map of the stations :



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