[MilCom] MIL: 8992.0 USB - SKYMASTER activity; COMPOSURE standing by for traffic

[Jeff Haverlah]

0944z 08 Jan 25

     HFGCS (regular frequencies) is active with COMPOSURE standing by for
traffic at 0800z; 0830z; 0900z (maybe earlier?)

     0823z+/- 11175.6 USB; SKYMASTER with .6 offset confirming message
traffic (4-element group).

     0845z 8992.0 (on freq) SKYMASTER confirms receipt of message traffic.
     0847z 8992.0 HEQE passed to SKYMASTER by BALMY (sounds like) 36, and
acknowledged.

     0856z COMPOSURE broadcasts the 30 character EAM 3ZETHP.
     0859z COMPOSURE (weak in California and gulf coast SDRs) echos same
but goes quiet during the broadcast. Followed by standing by for traffic at
0900z.

     0903z COMPOSURE begins a 30 character EAM NDDFN7 but went quiet during
reading of preamble and apparently did not finish.

     At 0917z there's one E6B visible on ADSB mapping sites: KIKI 47
AE0412.  IMO that is not "SKYMASTER." Could be wrong.

     SKYMASTER on 11175.6 offset is probably RULE 43 AE040E. Could be
wrong. The AE040E E6 is known for using the .6 offset on 11175 or 8992 (not
both when simulcasting) during his message traffic and connectivity comms.
RULE 43 departed TAMPA, Florida around 0711z and flew east out over the
Atlantic. He went dark around 0740z+/- just east of Florida.

     22.7 KHz VLF FSK is active at 0320z+/- with the NDDFN7 string.
Finished with his final mode around 0940z+/-. TACAMO PAC

     It quieted down around 0928z.  Standing by for traffic was not heard
at 0930z.

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