|Name||D marker, Fazan-37|
|Location||St. Petersburg area, Sudak communication hub (not confirmed)
|Known counterpart stations|
This is a Russian military commandment network serving the Western Military District. It occasionally sends "Monolith" type messages addressed to Fazan-37. (Russian: Фазан-37) It is presumably the command network of 6th Joined Army Staff, located at the Sudak communication hub in Agalatovo.
The first frequency known to be used by this network was 5292kHz. The first known message on this frequency was heard on November 12, 2011. This network had no channel marker until February 11, 2015. The first channel marker was a long dash followed by two short tones (like the Morse code character "D"), sometimes with yet another short tone appended (Morse code character "B"). This marker has proven itself to be unstable, being sometimes heard with 7 or 8 short tones. On June 5, 2017, it changed its frequency from 5292kHz to 3240kHz.
The network is probably organized using the 257Ц2 equipment (комплекс технических средств дистанционного управления связью и обеспечения передачи сигналов централизованного боевого управления "Монолит-АС" - system for communications remote control and for transmitting central commandment control signals "Monolith-AC")