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| Subject: | VLF: Alpha on alternate frequencies |
| From: | Markus Vester <[email protected]> |
| Date: | Wed, 15 Jun 2016 06:14:23 -0400 |
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The Russian Alpha navaid system is currently transmitting on the alternate frequency set, mentioned by Trond Jacobsen on http://www.vlf.it/alphatrond/alpha.htm : "There is also a set of very rarely used alternate frequencies wich are multiples of 781.25 Hz F6 12500.00000 Hz = 16 x 781.25 Hz F7 13281.25000 Hz = 17 x 781.25 Hz F8 15625.00000 Hz = 20 x 781.25 Hz The four different frequencies are the tree known secondary frequencies, 12.500 kHz, 13.281 kHz and 15.625 kHz together with a new, previously unlisted, Fx on 12.700 kHz." The purple traces of my RDF spectrogram http://www.df6nm.darc.de/vlf/vlfgrabber.htm seem to indicate that the signal is emitted only by the northerly station, Revda near Murmansk. 73, Markus
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