HFGCS General Log

[autovon]

20 Feb 24
11175
1343z SPAR90 with HF radio check.  No response.
1345z SPAR90 with HF radio check.  MAINSAIL answers.

[~SIGINT~]

220137Z FEB 2024 11175.0 kHz USB
01:37Z SAM 179 calling MAINSAIL for radio check; L/C.

221525Z FEB 2024 11175.0 kHz USB
15:25Z MAIN 86 calling MAINSAIL; no response;
15:26Z MAIN 86 calling MAINSAIL; no response;
15:29Z Last caller, this is MAINSAIL, please say again your last, over.

[~SIGINT~]

230011Z FEB 2024 11175.0 kHz USB
00:11Z SPEAR 42 calling for radio check with response from SPEAR 41; L/C.

230042Z FEB 2024 11175.0 kHz USB
00:42Z AIR? NO NAME 2 this is AIR? NO NAME 1 radio check;
00:42Z Testing 1 2 3 2;
00:42Z Testing testing 1 2 3 4 5 5 4 3 2 1.

231523Z FEB 2024 11175.0 kHz USB
15:23Z EDDY 61 calling MAINSAIL with request for latest message traffic;
15:24Z MAINSAIL: EDDY 61 please say again your last; EDDY 61: Request for latest message traffic;
15:24Z MAINSAIL: No message traffic at this time.

231525Z FEB 2024 11175.0 kHz USB
15:25Z EDDY 61 calling STRATO CONTROL; no response;
15:26Z EDDY 61 calling STRATO CONTROL; no response.

Note: The call sign STRATO CONTROL was used on UHF and is the equivalent to the HF call sign MAINSAIL. C/S STRATO CONTROL was used on 311.0 SAC (Pri) and 321.0 SAC (Sec). SAC (Strategic Air Command) was disestablished in 1992 and reactivated as the Air Force Global Strike Command (AFGSC) in 2009. This Command assumes control of all USAF bomber aircraft and the intercontinental ballistic missile force.

[INTERNETFRIEND]

232002Z FEB 2024 11175.0 kHz USB
20:02Z NO ID?: "[unintelligible*] We are ready to terminate digital and analog at this time."
20:02Z NO ID?: "3, 2, 1."

* I cannot tell what is being said at the beginning. A recording is available at the relevant timestamp (you'll have to jump to it manually for now); https://www.youtube.com/watch?v=4ssFMSe3wQE

[~SIGINT~]

Sounds like you caught the aircraft in comms with the satellite coordination centre requesting to turn off the SATCOM link.

What I got from the recording is as follows:
20:02Z This is UNCLE JOE on order wire;
20:02Z NO ID?: "[unintelligible*] We are ready to terminate digital and analog at this time."
20:02Z NO ID?: "3, 2, 1."

See my post here for a similar log entry:

HFGCS General Log - 082205Z DEC 2023 11175.0 kHz USB
https://www.hfunderground.com/board/index.php/topic,108654.msg379289.html#msg379289

[~SIGINT~]

242020Z FEB 2024 11175.0 kHz USB
20:20Z REACH 335 calling MAINSAIL for radio check; no response.

[Zulu-150]

Northstar analog and digital air to ground links not Satcom

[autovon]

26 Feb 24
11175
1402z SKULL11 calling any player for r/c x2.  No response.
1445z SKULL13 calling RED RIVER.  RED RIVER answers.
1704z SKULL13 calling RED RIVER x2. 
1802z REAPER01 calling any station for r/c.

[~SIGINT~]

261402Z FEB 2024 11175.0 kHz USB
14:02Z SKULL 11 calling ANY PLAYER; no response;
14:02Z SKULL 11 calling ANY PLAYER; no response.

261453Z FEB 2024 11175.0 kHz USB
14:53Z UNID calling MAINSAIL; no response.

Note: UNID was broken, unreadable.

261847Z FEB 2024 11175.0 kHz USB
18:47Z SPEAR 15 calling ? CONTROL. (nothing else heard)

262022Z FEB 2024 11175.0 kHz USB
20:22Z AIRCRAFT 563 calling MAINSAIL for phone patch; MAINSAIL: Standby for QSY;
20:24Z MAINSAIL: Request QSY to 4442; (nothing heard)
20:29Z AIRCRAFT 563 calling MAINSAIL on 11175; no response;
20:30Z AIRCRAFT 563 calling MAINSAIL on 11175; no response.

262203Z FEB 2024 11175.0 kHz USB
22:03Z REACH 250 calling ANY RADIO for radio check; response from REACH 264; L/C.

[~SIGINT~]

280030Z FEB 2024 11175.0 kHz USB
00:30Z SKULL 23 calling MUDBUG for radio check; no response;
00:31Z SKULL 23 calling ANY AIRCRAFT ANY RADIO; no response;
00:31Z SKULL 23 calling ANY AIRCRAFT ANY RADIO; no response.

280109Z FEB 2024 11175.0 kHz USB
01:09Z SKULL 23 calling ANY AIRCRAFT ANY RADIO; no response.

[~SIGINT~]

291845Z FEB 2024 11175.0 kHz USB
18:45Z AMC 1433 calling ANDREWS for signal check; response from MAINSAIL;
18:48Z AMC 1433 calling ANDREWS for signal check; no response.

292102Z FEB 2024 11175.0 kHz USB
21:02Z RED RIVER calling ANY STATION for radio check; no response;
21:02Z RED RIVER calling ANY STATION for radio check; no response;
21:02Z RED RIVER calling ANY STATION for radio check; no response;
21:03Z RED RIVER calling ANY STATION for radio check; no response;
21:03Z RED RIVER calling ANY STATION for radio check; no response.

Note: RED RIVER sounds like it is using the new digital radio / link equipment.

[~SIGINT~]

011950Z MAR 2024 11175.0 kHz USB
19:50Z SPEAR 51 calling ANY RADIO for radio check; no response;
19:54Z SPEAR 51 calling ANY RADIO for radio check; no response;
19:55Z SPEAR 51 calling PUBLICIZED for radio check; L/C.

012035Z MAR 2024 11175.0 kHz USB
20:35Z Lajes AFB calling ANDREWS for radio check; L/C.

[~SIGINT~]

021544Z MAR 2024 11175.0 kHz USB
15:44Z TIGER 91 calling MAINSAIL for radio check; L/C.

[autovon]

4 MAR 24
11175
1516z PIONEER562 calling MAINSAIL for r/c x2.  No response.
1521z SKULL12 calling MUDBUG for r/c.  MAINSAIL answers.

[~SIGINT~]

041516Z MAR 2024 11175.0 kHz USB
15:16Z PIONEER 562 calling MAINSAIL for radio check; no response;
15:16Z PIONEER 562 calling MAINSAIL for radio check; no response.

041521Z MAR 2024 11175.0 kHz USB
15:21Z SKULL 12 calling MUDBUG with response from MAINSAIL.

041612Z MAR 2024 11175.0 kHz USB
16:12Z REACH 2020 calling MAINSAIL for radio check; no response;
16:13Z REACH 2020 calling MAINSAIL for radio check; L/C;
16:14Z REACH 2020 calling MAINSAIL on second radio for radio check; L/C.

041950Z MAR 2024 11175.0 kHz USB
19:50Z OTIS 33 calling MAINSAIL for radio check; L/C.

041950Z MAR 2024 11175.0 kHz USB
19:50Z OTIS 33 calling MAINSAIL for radio check; L/C;
19:58Z MAINSAIL request OTIS 33 change frequency to 11159;
20:00Z OTIS 33: Request phone patch ###-###-####;
20:04Z OTIS 33: ? De Rosa;
20:05Z OTIS 33: Looking for an update on BANGLE 41 through 44;
20:05Z Phone Patch: BANGLE 41 though 44 ? Arkansas;
20:06Z OTIS 33: Estimate ? 412449 in El Paso;
20:07Z MAINSAIL: Phone patch failed, prepared to relay, send message;
20:07Z OTIS 33: How many jets have left Northern Arkansas and estimate time El Paso;
20:12Z MAINSAIL: 4 jets departed Northern Arkansas; 1:40 of flight time left to El Paso;
20:13Z OTIS 33: Good copy, thank you. No further assistance required.

042357Z MAR 2024 11175.0 kHz USB
23:57Z SKULL 14 calling MUDBUG for radio check; response from MAINSAIL.