[MilCom] MIL: 11175.0 USB - CASTAWAY; WHITE ASH; SULFIDE; and IMMORTAL

[Jeff Haverlah]

0055z 04 Mar 25

1614z+/- BEZEL 11 (E6B; AE041B) launched from TINKER and flew to the OFFUTT
area where he then flew in patterns that "boxed" the OFFUTT area. That can
be followed on ADSBExchange's playback function.

     11175.0 was active at 1618z IMMORTAL (BEZEL 11) called and eventually
raised SULFIDE (NCS HFGCS) "for a signal check" and to enter the net.

     11175.0 was active at 1637z with IMMORTAL calling CASTAWAY with no
known response.

     11175.0 was active at 1639z with IMMORTAL calling and eventually
(1642z) apparently raising WHITE ASH (weak/readable to IMMORTAL; unheard on
2 SDRs here) "for a signal check" and then into his script: (message of 3
groups) "KQJ RCU ABK; Time 1642; Authentication TS; I say again; KQJ RCU
ABK; This is IMMORTAL, out."

RCU and ABK (3rd group) have been in use since 02 Feb 25 (when this process
started.)

While flying his pattern that "boxed" OFFUTT, something interesting
happened:

     11175.0 was active at 1803z (just after h+00) with IMMORTAL
broadcasting the 33 character EAM HDK5YU.

     11175.0 was active at 1830z with IMMORTAL broadcasting the 43
character EAM HDIQTU; more to follow; HDK5YU. The h+00/h+30 NCS/ABNCP
restoral rebroadcast window. He then rebroadcast both strings at 1900z and
1930z. Nothing heard at 2000z.

At no time was the NCS (SULFIDE) heard with the ground station broadcast of
both strings.

     11175.0 was active at 2154z with IMMORTAL calling SULFIDE with no
known response. IMMORTAL was approaching SCOTT AFB and probably wanted to
exit the net.

SULFIDE didn't reappear until SULFIDE's 2224z broadcast of the 30-character
EAM TRFPZS.

There was no logged broadcast of a 03 Mar 25 UTC daily post 0000z
communication test count.

The 04 Mar 25 daily communications test count was conducted by HEADCHEF
(sounds like) at 0022z.

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