More Random Thots on Russia's Random Beacons

Remember: beacon tracking can be relatively random with beacons such as the 18 NCDXF beacons.
When/how they operate is publicly published knowledge; we know their specific purpose, and, w/in 24-hours, we know when a beacon is out of service, as well as the status for bringing it back on the air.  The NCDXF beacons transmit the EXACT same message at the EXACT same time 24 hours
a day, into perpetuity.

With the Russian letter beacons, we can reliably determine very little.  We really don't even know EXACTLY "where" they are and "why they are there"; especially when you consider that Russian military does not even acknowledge their existence in the first place.

Recently, every evening before bed, finds me checking 7.038.8 as propagation opens up in
the Asian direction.  In recent weeks, the "F" beacon has been AWOL, while the "M" beacon has
been lacking signal strength; a result of hardware problems or poor propagation?  Meanwhile the "K" beacon has been switching its ID from "K"-"K"-"K" to "K"-"K"-"K"-"K"-"K" and then -"K"-"K"-"K"-"K" 
One evening listening on ~7.039, the "K" was silent while the "M" beacon was LOUDER than ever.   AMAZING!

It also occurred to me that I've been neglecting the Northern European beacons.  Using the Dutch university of TWENTE SDR is the best way I know to restart an EU beacon listening exercise; it is thru that system I heard all the Russian EU beacons for the 1st time.  With the Russia vs. Ukraine nonsense happening since late March, it was my hope to spot a not-known relationship between
the conflict and the beacon activity.  Thus far, no correlation has been observed.

There are NUMEROUS Numbers of SDR's available for our use, all around planet earth.

Because the Asian beacons have me so confounded, I am on the lookout for reliable SDR receivers around the E. Asian area of the "F", "M" AND "K" beacons.  It is possible they are not AWOL at all,
but simply targeting different directions other than the West coast.

On a related note, recently tuning the KFS SDR below 3.500 Mhz (80-meters), I of course encountered CHU - the Canadian Time station on 3.330.  Below that, I was surprised to
encounter a rhythmic "SQUAWK" noise.  Every minute the station ID's in Cw as "DW". 
Then, approximately every 5 minutes it sends a set of alphanumeric data; sometimes
the same as what was sent 5 minutes ago, altho sometimes one or more of the numbers
are different.  Listening on USA/Pacific SDR's, this DW station is only heard on the KFS
Web SDR in Half Moon Bay California.

What IS the "DW" station all about.  I sent an e-mail to Hugh Stegman (writer for the Spectrum Monitor magazine) about this station, hoping in all of HIS listening, he has come across it many
times and/or knows the direction to turn for finding out more about it.

 There's NO doubt about it - Beacons are fascinating mysteries to delve into on the Shortwave bands.

What beacon stations, have YOU encountered?