[MilCom] MIL: 11175.0 USB - SPEEDBOAT; TERTIARY; and FISH HAWK

[Jeff Haverlah]

0119z 28 Nov 25

UTC 27 Nov 25

American Thanksgiving holiday.

0004z: SPEEDBOAT with a communications test count.
[USSTRATCOM CP]

0309z: FISH HAWK (presumed E6B; perhaps AFE1A0 out of OFFUTT) called
MAINSAIL and raised ANDREWS to exit the net.
0314z: FISH HAWK exited the net. AFE1A0 was approaching PAX RIVER at that
time.

[The only message traffic of the day; beginning after midnight EST into
local 27 Nov.]
========
0545z: TERTIARY (NCS); VRO7HQ; 22 characters; P4.
VRO7HQAMNIMSDPOHQ2SN2D

0608z: TERTIARY; 7DZ67B; P1.
7DZ67BK2HMEK24YJPIPFBY4QSPTI3T

0624z; TERTIARY; 7D5GUR; P1.
7D5GURRRSOHGS4HZJWVCRV7PR5ELI4
========

Traffic quiet through 2359z.

1359z: ANDREWS with test count.
1413z: ANDREWS with test count.
1851z: MAINSAIL with test count.
2333z: MAINSAIL

End of UTC day.

========

For consideration, look at the 0545z - 0624z traffic window and its
contents. It sticks out because it is on a day that was otherwise "traffic
quiet." Then look at the active traffic windows beginning at around
0500z+/- through 0900z from UTC Friday 21 Nov onward, and the contents of
those windows.  The 23rd was "quiet" but otherwise the 27th appears to
"fit" it that possible transmission pattern. Then take it back through the
end of Global Thunder. There are other days with occasional activity in
what is otherwise "normally" a quiet time of the clock that might fit that
pattern.

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