LF: Chayka status?

["Markus Vester" <markusvester@aol.com>]

Hello LF,

does someone in the group have information on the current status of the 
Russian Chayka chains (Loran-C equivalent on 100 kHz)?
The transmissions of the Western Chain (GRI 8000) seem to have gone off air 
on May 12. Could someone with an LF receiver in the region perhaps confirm 
the absence or presence of sideband lines at multiples of 6.25 Hz?
Wikipedia mentions up to five additional chains on GRI's 7950, 5980, 5960, 
4970, 5970. I have looked for their pulses here, but never managed to find 
any.
Any hints would be greatly appreciated.

73 de Markus, DF6NM