[MilCom] MIL: 11175.0 USB - SALLY GEE; MILL RUN; DANDY LION and JAKE 11; EFFICIENT/STICKLER

[Jeff Haverlah]

0539z 03 Feb 25

No post-0000z 02 Feb 25 daily communications test count heard by me.

     11175.0 was active at 1504z; 1513z; 1522z; 1533z; and 1543z with MILL
RUN (NCS HFGCS) broadcasting 30-character EAMs "FOR CRAFT UNION." Nothing
heard at 1553z. 10-minute cycle; ###3z timestamps (a common timestamp for
these things). All strings except the 1543z string had 3Z prefixes. The
1543z string had a 5Q prefix - an indication of a change in the prefix for
this class of strings.  Oddly, it's very similar to the current (at least
as of 0532z 02 Feb 25) 5G series (5G42JD; 27 characters).\

Note the timestamps below:

     1520z DANDELION (E6B; EOSIN 06 ex TINKER) works MILL RUN and enters
the net.

     At the conclusion of the challenge process, DANDELION said "break" and
immediately called SALLY GEE with no known response.

     1600z JAKE 11 raised MILL RUN and requested "current message
traffic."  MILL RUN advised there was none.

     1811z DANDYLION called SALLY GEE.
     1811z SALLY GEE (good levels; interesting audio) called DANDELION and
raised.
     1812z Both exchanged signal reports.
     1812z DANDELION: "Break. Message of 3 groups follows:

"RCU FNE ABK time 12 authentication PC; I say again; RCU FNE ABK; this is
DANDELION out." And quiet. The authentication was not repeated in the 2nd
reading.

     1847z DANDELION called SPACE GUN (unknown).
     1850z DANDELION called MILL RUN to exit the net.

To put the 1520z through 1850z window in context, go to ADSBExchange and
replay the 1400z through 1850z time period.You'll see the launch of EOSIN
06/DANDELION; the launch of JAKE 11; the eventual DANDELION going dark and
apparent meet up with JAKE 11; and the reappearance of DANDELION after
breaking it's apparent pattern with JAKE 11. For context, compare the above
timestamps with timestamps on the routes of the aircrafts.

The 3-element groups (of various lengths) with authentications are not
unknown over the years, but it's still interesting when it happens.

     21176z EFFICIENT (E6B) called MILL RUN (probably to enter the net).

EFFICIENT made the run through Texas to the Gulf

     2132z MILL RUN broadcast the 30 character EAM FBEM2D.

     2200z STICKLER broadcast FBEM2D; h+00/h+30 restoral window.
     2230z STICKLER broadcast FBEM2D.
     2300z Nothing heard.

There was no NOTAM reservation for the GULF at the time of
STICKLER's broadcasts. No VLF transmission was noted (no wire work.)

Another instance of an E6B launching under one callword but performing
restoral work under another callword.

(SPELMAN is UTC 03 Feb 25 comm test count callword. Perhaps it'll reappear
over the course of the UTC day.)

Jeff
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Jeff Haverlah               Coastal Texas
     Airspy HF+ Discovery   W6LVP loop  Various web SDRs
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