LF: Russian "Alpha" VLF beacons moved ?

[DL4YHF@aol.com]

Hello Group,

Sorry this is not LF but VLF (which is more interesting to me these days):
I observed a frequency change of the three russion "Alpha" (RSDN-20) transmitters. At the moment, they are very strong on
 12500 Hz,   12696 Hz, and 13283 Hz
with a small active indoor loop. The "old" frequencies used until a few days ago were
  11905 Hz,  12649 Hz and 14881 Hz .
They must have a nice variometers or a lot of taps on their loading coils ;-) ... anyone got more info about these 'beacons' ? Especially interesting would be their location and "official" accuracy of their frequency / phase .

Thanks,
  Wolf DL4YHF