HFGCS General Log

[~SIGINT~]

020008Z MAY 2024 11175.0 kHz USB
00:08Z MINOT RADIO MAINTENANCE calling ANY STATION for HF radio check; no response.

022312Z MAY 2024 11175.0 kHz USB
23:12Z NW1 (US STRATCOM Nightwatch 1 NAOC A/C) with ALE transmission to call sing 000;

[23:12:07][FRQ 11175000][TO ][000            ][TIS][NW1            ][AL0] BER 30 SN 15

[~SIGINT~]

072326Z MAY 2024 11175.0 kHz USB
23:26Z SKULL 23 calling ANY STATION for radio check; no response;
23:26Z SKULL 23 calling MUDBUG for radio check; no response;
23:27Z SKULL 23 calling MUDBUG for radio check; no response.

[~SIGINT~]

101417Z MAY 2024 11175.0 kHz USB
14:17Z REACH 7120 calling MAINSAIL for radio check; no response.

[INTERNETFRIEND]

160836Z MAY 2024 11175.0 kHz USB
08:32 "ANDREWS GLOBAL, ANDREWS GLOBAL, this is V9Z. Exercising Esteem Highly Alpha. Request phone patch to J1X. Over."
08:34 "MAINSAIL, MAINSAIL, this is V9Z. Request if your station has phone patch capabilities? Over."

MUNICIPAL (NCS callsign for May 16) eventually responds; QSY is arranged to 8047 kHz.

{Was not available to change frequency to continue monitoring.}

[~SIGINT~]

170120Z MAY 2024 11175.0 kHz USB
01:20Z SPAR 80 calling MAINSAIL for radio check; response from CHILL 43; L/C.

[INTERNETFRIEND]

Partial log of messages highly likely to have been broadcast by E4 ADFEB4 on May 17 2024;

Code: [Select]

NOVEMBER
XRAY XRAY
ZULU ZULU
EIGHT EIGHT
EIGHT EIGHT
BT
NNN
NNN
NNNNKKKKKKZCZCZCZXLLXLLXLL
ZZ
BT
EIGHT EIGHT
EIGHT EIGHT
ZERO ZERO
ONE SEVEN
ONE NINE
THREE NINE
ALFA ALFA
ECHO ECHO
GOLF GOLF
KILO KILO
NOVEMBER NOVEMBER
XRAY XRAY
ZULU ZULU
EIGHT EIGHT
EIGHT EIGHT
BT
NNN
NNN
NNNNKKKKKKZCZCZCZXLLXLLXLL
ZZ
BT
EIGHT EIGHT
EIGHT EIGHT
ZERO ZERO
ONE SEVEN
ONE NINE
THREE NINE
ALFA ALFA
ECHO ECHO
GOLF GOLF
KILO KILO
NOVEMBER NOVEMBER
XRAY XRAY
ZULU ZULU
EIGHT EIGHT
EIGHT EIGHT
BT
NNN
NNN
NNNNKKKKKKZCZCZCZXLLXLLXLL
ZZ
BT
EIGHT EIGHT
EIGHT EIGHT
ZERO ZERO
ONE SEVEN
ONE NINE
THREE NINE
ALFA ALFA
ECHO ECHO
GOLF GOLF
KILO KILO
NOVEMBER NOVEMBER
XRAY XRAY
ZULU ZULU
EIGHT EIGHT
EIGHT EIGHT
BT
NNN
NNN
NNNNKKKKKKZCZCZCZXLLXLLXLL
ZZ
BT
EIGHT EIGHT
EIGHT EIGHT
ZERO ZERO
ONE SEVEN
ONE NINE
THREE NINE
ALFA ALFA
ECHO ECHO
GOLF GOLF
KILO KILO
NOVEMBER NOVEMBER
XRAY XRAY
ZULU ZULU
EIGHT EIGHT
EIGHT EIGHT
BT
NNN
NNN
NNNNKKKKKKZCZCZCZXLLXLLXLL
ZZ
BT
EIGHT EIGHT
EIGHT EIGHT
ZERO ZERO
ONE SEVEN
ONE NINE
THREE NINE
ALFA ALFA
ECHO ECHO
GOLF GOLF
KILO KILO
NOVEMBER NOVEMBER
XRAY XRAY
ZULU ZULU
EIGHT EIGHT
EIGHT EIGHT
BT
NNN
NNN
NNNNCHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANN

//////// CUT ////////

 HANCEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
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CHANNEL ONE
CHANNEL ONE
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CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE KKKKKKZCZCZCZXLLXLLXLL
ZZ
BT
EIGHT EIGHT
EIGHT EIGHT
ZERO ZERO
ONE SEVEN
ONE NINE
FIVE SIX
ALFA ALFA
ECHO ECHO
GOLF GOLF
KILO KILO
NOVEMBER NOVEMBER
XRAY XRAY
ZULU ZULU
EIGHT EIGHT
EIGHT EIGHT
BT
NNN
NNN
NNNNKKKKKKZCZCZCZXLLXLLXLL
ZZ
BT
EIGHT EIGHT
EIGHT EIGHT
ZERO ZERO
ONE SEVEN
ONE NINE
FIVE SIX
ALFA ALFA
ECHO ECHO
GOLF GOLF
KILO KILO
NOVEMBER NOVEMBER
XRAY XRAY
ZULU ZULU
EIGHT EIGHT
EIGHT EIGHT
BT
NNN
NNN
NNNNKKKKKKZCZCZCZXLLXLLXLL
ZZ
BT
EIGHT EIGHT
EIGHT EIGHT
ZERO ZERO
ONE SEVEN
ONE NINE
FIVE SIX
ALFA ALFA
ECHO ECHO
GOLF GOLF
KILO KILO
NOVEMBER NOVEMBER
XRAY XRAY
ZULU ZULU
EIGHT EIGHT
EIGHT EIGHT
BT
NNN
NNN
NNNNKKKKKKZCZCZCZXLLXLLXLL
ZZ
BT
EIGHT EIGHT
EIGHT EIGHT
ZERO ZERO
ONE SEVEN
ONE NINE
FIVE SIX
ALFA ALFA
ECHO ECHO
GOLF GOLF
KILO KILO
NOVEMBER NOVEMBER
XRAY XRAY
ZULU ZULU
EIGHT EIGHT
EIGHT EIGHT
BT
NNN
NNN
NNNNKKKKKKZCZCZCZXLLXLLXLL
ZZ
BT
EIGHT EIGHT
EIGHT EIGHT
ZERO ZERO
ONE SEVEN
ONE NINE
FIVE SIX
ALFA ALFA
ECHO ECHO
GOLF GOLF
KILO KILO
NOVEMBER NOVEMBER
XRAY XRAY
ZULU ZULU
EIGHT EIGHT
EIGHT EIGHT
BT
NNN
NNN
NNNNKKKKKKZCZCZCZXLLXLLXLL
ZZ
BT
EIGHT EIGHT
EIGHT EIGHT
ZERO ZERO
ONE SEVEN
ONE NINE
FIVE SIX
ALFA ALFA
ECHO ECHO
GOLF GOLF
KILO KILO
NOVEMBER NOVEMBER
XRAY XRAY
ZULU ZULU
EIGHT EIGHT
EIGHT EIGHT
BT
NNN
NNN
NNNNCHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CH

//////// CUT ////////

AL ONE
CHANAL OKE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
KKKKKKZCZCZCZXLLXLLXLL
ZZ
BT
EIGHT EIGHT
EIGHT EIGHT
ZERO ZERO
ONE SEVEN
TWO ZERO
TWO ZERO
ALFA ALFA
ECHO ECHO
GOLF GOLF
KILO KILO
NOVEMBER NOVEMBER
XRAY XRAY
ZULU ZULU
EIGHT EIGHT
EIGHT EIGHT
BT
NNN
NNN
NNNNKKKKKKZCZCZCZXLLXLLXLL
ZZ
BT
EIGHT EIGHT
EIGHT EIGHT
ZERO ZERO
ONE SEVEN
TWO ZERO
TWO ZERO
ALFA ALFA
ECHO ECHO
GOLF GOLF
KILO KILO
NOVEMBER NOVEMBER
XRAY XRAY
ZULU ZULU
EIGHT EIGHT
EIGHT EIGHT
BT
NNN
NNN
NNNNKKKKKKZCZCZCZXLLXLLXLL
ZZ
BT
EIGHT EIGHT
EIGHT EIGHT
ZERO ZERO
ONE SEVEN
TWO ZERO
TWO ZERO
ALFA ALFA
ECHO ECHO
GOLF GOLF
KILO KILO
NOVEMBER NOVEMBER
XRAY XRAY
ZULU ZULU
EIGHT EIGHTIEIGHT EIGHT
BT
NNN
NNN
NNNNKKKKKKZCZCZCZXLLXLLXLL
ZZ
BT
EIGHT EIGHT
EIGHT EIGHT
ZERO ZERO
ONE SEVEN
TWO ZERO
TWO ZERO
ALFA ALFA
ECHO ECHO
GOLF GOLF
KILO KILO
NOVEMBER NOVEMBER
XRAY XRAY
ZULU ZULU
SIGHT EIGHT
EIGHT EIGHT
BT
NNN
NNN
NNNNKKKKKKZCZCZCZXLLXLLXLL
ZZ
BT
EIGHT EIGHT
EIGHT EIGHT
ZERO ZERO
ONE SEVEN
TWO ZERO
TWO ZERO
ALFA ALFA
ECHO ECHO
GOLF GOLF
KILO KILO
NOVEMBER NOVEMBER
XRAY XRAY
ZULU ZULU
EIGHT EIGHT
EIGHT EIGHT
BT
NNN
NNN
NNNNKKKKKKZCZCZCZXLLXLLXLL
ZZ
BT
EIGHT EIGHT
EIGHT EIGHT
ZERO ZERO
ONE SEVEN
TWO ZERO
TWO ZERO
ALFA ALFA
ECHO ECHO
GOLF GOLF
KILO KILO
NOVEMBER NOEMBER
XRAY XRAY
ZULU ZULU
EIGHT EIGHT
EIGHT EIGHT
BT
NNN
NNN
NNNNCHANNEL ONE
CHANNEL ONE
CHANNEL ONE
CHANNEL ONE
888800171939AAEEGGKKNNXXZZ8888 [repeated at least 5 times]
888800171956AAEEGGKKNNXXZZ8888 [repeated 6 times]
888800172020AAEEGGKKNNXXZZ8888 [repeated 6 times]

Broadcast was FSK signal on 31.7 kHz (50/50). Captured using KiwiSDR in Wisconsin. [Sample recording]

(SIGINT/all, I am not sure if you consider VLF 8888 messages suited for the EAM/FDM log, this HFGCS general log, or should be in its own thread. Let me know if it does not fit here)

[~SIGINT~]

201426Z MAY 2024 11175.0 kHz USB
14:26Z SKULL 12 for radio check; no response.

201429Z MAY 2024 11175.0 kHz USB
14:29Z NIGHTHAWK 12 calling MAINSAIL for radio check; no response.

[~SIGINT~]

210118Z MAY 2024 11175.0 kHz USB
01:18Z AIRCRAFT 3125 calling ANY STATION for radio check; no response.

[~SIGINT~]

231837Z MAY 2024 11175.0 kHz USB
18:37Z REACH 4000 calling MAINSAIL; no response;
18:38Z REACH 4000 calling MAINSAIL; no response;
18:38Z REACH 4000 calling MAINSAIL; no response.

[~SIGINT~]

251458Z MAY 2024 11175.0 kHz USB
14:58Z ANDREWS and WEST COAST with radio checks;
15:00Z WEST COAST sending ANDREWS what sounded like a coded alpha numeric message; (WEST COAST weak unreadable at my location)
15:01Z ANDREWS sending a test count to WEST COAST.

[INTERNETFRIEND]

May 26 2024
261812 MAY 2024 4724 kHz
18:12z FSK (RTTY?) began broadcasting on 4724 kHz.

Specifically, centered on 4726 kHz; shift seems to be 850, Baud is ?. Was already present when I tuned in, would have no clue last time I checked 4724 kHz so could have already been going on for quite a while.

Broadcast without any apparent break until May 28 1532z. Almost certainly coming from California as for the entire period of time, some SDRs further away from California have gotten good reception at various points of day, but only those in California have consistently got enjoyed reception for the entire duration.

[autovon]

Partial log of messages highly likely to have been broadcast by E4 ADFEB4 on May 17 2024;
(SIGINT/all, I am not sure if you consider VLF 8888 messages suited for the EAM/FDM log, this HFGCS general log, or should be in its own thread. Let me know if it does not fit here)

This is a pretty cool catch.  Maybe it's more aligned with the FDM log?   Either way, it's a good intercept and thanks for posting it.  We don't see too many VLF logs of this sort.

There used to be a Navy ELF site up near where you caught that E-4.  They still go up there and let out the tailing wire over the Big Lake.
https://ss.sites.mtu.edu/mhugl/2015/10/11/clam-lake-wi-elf-transmitter/

[autovon]

11175
1114z hearing MAINSAIL with a test count, very weak.  Possibly a robo voice doing the test count.
1213z Guard aircraft calling for r/c.  Puerto Rico answers.

[MattCawby]

11175.0 khz May 29 0307z

CHILL22 radio check with MAINSAIL.

[autovon]

6 JUN 24
11175
1147z REACH413 calling MAINSAIL for r/c.  No answer.
1157z MAINSAIL with a test count.
1208z MAINSAIL with a test count.
1220z MAINSAIL responding to an UNID station.