[MilCom] MIL: 11175.0 USB - DUTCH BOY and CRAWFISH

[Jeff Haverlah]

0125z  10 May 26

09 May 26

Except for two apparent E6Bs exiting the net in the first 3 hours of the
new UTC day (but still local Friday) there was no detected E6B and
associated message traffic during the UTC day.

As for message traffic the UTC day consisted entirely (apparently, unless
other logs are provided) of an unusual 8 hour traffic window of nothing
(with a single exception at the end) but "kaiju" strings (XZ prefix) - a
series that appeared 02 Oct 2024 (beginning of that Fiscal Year).

--------

0029z: Unknown player (too weak in the noise floor to ID) worked ? to exit
the net.
0031z: Unknown player exited the net.

0250z: CRAWFISH (suspected AEE6AC) called and raised MAINSAIL but did not
respond on 11175.0.
0256z: 8992.0; MAINSAIL issued challenge but CRAWFISH instead exited the
net in the blind with an "authentication" statement and quiet. AEE6AC was
descending into TINKER at that time.

Quiet.

[8 hour traffic session follows.]
========
[10 minute window]
1502z: DUTCH BOY (NCS); XZT4EG; 22 characters; P4.
XZT4EG47OF5TSIFUWYMWJZ

1504z: DUTCH BOY; XZTPJX; 25 characters; P4.
XZTPJXPO5R4SW5OX5OMV6G4YO

1507z: DUTCH BOY; XZEDNH; 30 characters (rare); P4
XZEDNHEGTGYICU3ZU3GKVMOEKMMTXK

Reformatted to show the positional pattern for these 30 character strings:

𝚇𝚉𝙴𝙳𝙽𝙷  [𝙿𝚛𝚎𝚊𝚖𝚋𝚕𝚎; 𝟼]
𝙴𝙶𝚃𝙶𝚈𝙸𝙲  [𝟽]
𝚄𝟹𝚉𝚄  [𝟺; 𝚡__𝚡]
𝟹𝙶  [𝟸]
𝙺𝚅𝙼 [𝟹]
𝙾𝙴  [𝟸]
𝙺𝙼𝙼  [𝟹]
𝚃𝚇𝙺  [𝟹]

[Group 3 section]
https://neetintel.github.io/structure_heatmap_30char.html

[5 hours later]
2022z: DUTCH BOY; XZLPXA; 22 characters; P4.
XZLPXAP2SZLTH2VP2U44W7

[One hour]
2126z: DUTCH BOY; XZY5HW; 22 characters; P4.
XZY5HWLAE63LRFIAZKDTLN

[Two hours]
2314z: DUTCH BOY; GX2JY6; P1.
GX2JY6KEROBXGBYVCSJY4V4DVJNLH3
========

[It's very rare to have a UTC day without a GX series (P1) string; or this
string closed out an unusual 8 hour message traffic session.]

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