12577 BFSK GMDSS HF DSC 11/12AUG18
Left a few GMDSS decoders running overnite to see how they fared on 12577, wich is the center frequency for the tone pair, the bfo rests at 12575 when demodulated in USB mode. The listed GMDSS hf freqs must be tuned 2kc lower on the tuning dial to center the bandpass if you use USB mode.
Used HDSDR DIG mode setting and formed the filter to 600Hz or so with a notch placed right at 2000Hz to increase sensitivity. Here's the catch at this time;
[16:43:48 UTC] Ship is equipped with Inmarsat B, C, or M station.
[16:43:48 UTC] First Telecommand: Test Request
[16:43:48 UTC] Second Telecommand: No Information
[16:43:48 UTC] EOS: RQ
[16:43:48 UTC] [CRC GOOD]
[16:47:20 UTC] [CRC BAD]
[16:56:46 UTC] [DSC 12/08/2018 12:56]
[16:56:46 UTC] Format: Individual
[16:56:46 UTC] Category: Safety
[16:56:46 UTC] Destination: MMSI 003660003 Country: United States of Ame
[16:56:46 UTC] rica
[16:56:46 UTC] Coastal station: unknown
[16:56:46 UTC] RCC: unknown
[16:56:46 UTC] Originator: MMSI 538004034 Country: Marshall Islands (Re
[16:56:46 UTC] public of the)
[16:56:46 UTC] Ship call.
[16:56:46 UTC] First Telecommand: Test Request
[16:56:46 UTC] Second Telecommand: No Information
[16:56:46 UTC] EOS: RQ
[16:56:46 UTC] [CRC GOOD]
[16:57:07 UTC] [DSC 12/08/2018 12:57]
[16:57:07 UTC] Format: Individual
[16:57:07 UTC] Category: Safety
[16:57:07 UTC] Destination: MMSI 003669997 Country: United States of Ame
[16:57:07 UTC] rica
[16:57:07 UTC] Coastal station: Miami
[16:57:07 UTC] RCC: MRCC Miami/MRCC Norfolk
[16:57:07 UTC] Originator: MMSI 241218000 Country: unknown
[16:57:07 UTC] Ship call.
[16:57:07 UTC] Ship is equipped with Inmarsat B, C, or M station.
[16:57:07 UTC] First Telecommand: Test Request
[16:57:07 UTC] Second Telecommand: No Information
[16:57:07 UTC] EOS: RQ
[16:57:07 UTC] [CRC GOOD]
[16:59:03 UTC] [DSC 12/08/2018 12:59]
[16:59:03 UTC] Format: Individual
[16:59:03 UTC] Category: Safety
[16:59:03 UTC] Destination: MMSI 003660003 Country: United States of Ame
[16:59:03 UTC] rica
[16:59:03 UTC] Coastal station: unknown
[16:59:03 UTC] RCC: unknown
[16:59:03 UTC] Originator: MMSI 367337960 Country: United States of Ame
[16:59:03 UTC] rica
[16:59:03 UTC] Ship call.
[16:59:03 UTC] Ship is equipped with Inmarsat C station.
[16:59:03 UTC] First Telecommand: Test Request
[16:59:03 UTC] Second Telecommand: No Information
[16:59:03 UTC] EOS: RQ
[16:59:03 UTC] [CRC GOOD]
[17:00:54 UTC] [DSC 12/08/2018 13:00]
[17:00:54 UTC] Format: Individual
[17:00:54 UTC] Category: Safety
[17:00:54 UTC] Destination: MMSI 003669995 Country: United States of Ame
[17:00:54 UTC] rica
[17:00:54 UTC] Coastal station: Portsmouth(CAMSLANT)
[17:00:54 UTC] RCC: MRCC Portsmouth
[17:00:54 UTC] Originator: MMSI 209317000 Country: Cyprus (Republic of)
[17:00:54 UTC] Ship call.
[17:00:54 UTC] Ship is equipped with Inmarsat B, C, or M station.
[17:00:54 UTC] First Telecommand: Test Request
[17:00:54 UTC] Second Telecommand: No Information
[17:00:54 UTC] EOS: RQ
[17:00:54 UTC] [CRC GOOD]
[17:01:45 UTC] [DSC 12/08/2018 13:01]
[17:01:45 UTC] Format: Individual
[17:01:45 UTC] Category: Safety
[17:01:45 UTC] Destination: MMSI 003669990 Country: United States of Ame
[17:01:45 UTC] rica
[17:01:45 UTC] Coastal station: Pt Reyes(CAMSPAC)
[17:01:45 UTC] RCC: MRCC Alameda
[17:01:45 UTC] Originator: MMSI 538004034 Country: Marshall Islands (Re
[17:01:45 UTC] public of the)
[17:01:45 UTC] Ship call.
[17:01:45 UTC] First Telecommand: Test Request
[17:01:45 UTC] Second Telecommand: No Information
[17:01:45 UTC] EOS: RQ
[17:01:45 UTC] [CRC GOOD]
[17:02:27 UTC] [DSC 12/08/2018 13:02]
[17:02:27 UTC] Format: Individual
[17:02:27 UTC] Category: Safety
[17:02:27 UTC] Destination: MMSI 477694200 Country: Hongkong (Special Ad
[17:02:27 UTC] ministrative Region of China)
[17:02:27 UTC] Ship call.
[17:02:27 UTC] Ship is equipped with Inmarsat C station.
[17:02:27 UTC] Originator: MMSI 003160023 Country: Canada
[17:02:27 UTC] Coastal station: Iqaluit
[17:02:27 UTC] RCC: RCC Trenton
[17:02:27 UTC] First Telecommand: Test Acknowledge
[17:02:27 UTC] Second Telecommand: No Information
[17:02:27 UTC] EOS: BQ
[17:02:27 UTC] [CRC GOOD]
[17:06:54 UTC] [DSC 12/08/2018 13:06]
[17:06:54 UTC] Format: Individual
[17:06:54 UTC] Category: Safety
[17:06:54 UTC] Destination: MMSI 003669997 Country: United States of Ame
[17:06:54 UTC] rica
[17:06:54 UTC] Coastal station: Miami
[17:06:54 UTC] RCC: MRCC Miami/MRCC Norfolk
[17:06:54 UTC] Originator: MMSI 477713600 Country: Hongkong (Special Ad
[17:06:54 UTC] ministrative Region of China)
[17:06:54 UTC] Ship call.
[17:06:54 UTC] Ship is equipped with Inmarsat C station.
[17:06:54 UTC] First Telecommand: Test Request
[17:06:54 UTC] Second Telecommand: No Information
[17:06:54 UTC] EOS: RQ
[17:06:54 UTC] [CRC GOOD]
[17:07:30 UTC] [DSC 12/08/2018 13:07]
[17:07:30 UTC] Format: Individual
[17:07:30 UTC] Category: Safety
[17:07:30 UTC] Destination: MMSI 477959900 Country: Hongkong (Special Ad
[17:07:30 UTC] ministrative Region of China)
[17:07:30 UTC] Ship call.
[17:07:30 UTC] Ship is equipped with Inmarsat C station.
[17:07:30 UTC] Originator: MMSI 007100003 Country: Brazil (Federative R
[17:07:30 UTC] epublic of)
[17:07:30 UTC] Coastal station: Manaus
[17:07:30 UTC] RCC: MRCC Brazil
[17:07:30 UTC] First Telecommand: Test Acknowledge
[17:07:30 UTC] Second Telecommand: No Information
[17:07:30 UTC] EOS: BQ
[17:07:30 UTC] [CRC GOOD]
[17:08:27 UTC] [DSC 12/08/2018 13:08]
[17:08:27 UTC] Format: Individual
[17:08:27 UTC] Category: Safety
[17:08:27 UTC] Destination: MMSI 002371000 Country: Greece
[17:08:27 UTC] Coastal station: Olympia
[17:08:27 UTC] RCC: JRCC Piraeus
[17:08:27 UTC] Originator: MMSI 538006890 Country: Marshall Islands (Re
[17:08:27 UTC] public of the)
[17:08:27 UTC] Ship call.
[17:08:27 UTC] Ship is equipped with Inmarsat C station.
[17:08:27 UTC] First Telecommand: Test Request
[17:08:27 UTC] Second Telecommand: No Information
[17:08:27 UTC] EOS: RQ
[17:08:27 UTC] [CRC GOOD]
[17:16:34 UTC] [DSC 12/08/2018 13:16]
[17:16:34 UTC] Format: Individual
[17:16:34 UTC] Category: Safety
[17:16:34 UTC] Destination: MMSI 564693000 Country: Singapore (Republic
[17:16:34 UTC] of)
[17:16:34 UTC] Ship call.
[17:16:34 UTC] Ship is equipped with Inmarsat B, C, or M station.
[17:16:34 UTC] Originator: MMSI 003160023 Country: Canada
[17:16:34 UTC] Coastal station: Iqaluit
[17:16:34 UTC] RCC: RCC Trenton
[17:16:34 UTC] First Telecommand: Test Acknowledge
[17:16:34 UTC] Second Telecommand: No Information
[17:16:34 UTC] EOS: BQ
[17:16:34 UTC] [CRC GOOD]
[17:18:14 UTC] [DSC 12/08/2018 13:18]
[17:18:14 UTC] Format: Individual
[17:18:14 UTC] Category: Safety
[17:18:14 UTC] Destination: MMSI 003660003 Country: United States of Ame
[17:18:14 UTC] rica
[17:18:14 UTC] Coastal station: unknown
[17:18:14 UTC] RCC: unknown
[17:18:14 UTC] Originator: MMSI 255806069 Country: Madeira
[17:18:14 UTC] Ship call.
[17:18:14 UTC] First Telecommand: Test Request
[17:18:14 UTC] Second Telecommand: No Information
[17:18:14 UTC] EOS: RQ
[17:18:14 UTC] [CRC GOOD]
[17:22:38 UTC] [DSC 12/08/2018 13:22]
[17:22:38 UTC] Format: Individual
[17:22:38 UTC] Category: Safety
[17:22:38 UTC] Destination: MMSI 003660003 Country: United States of Ame
[17:22:38 UTC] rica
[17:22:38 UTC] Coastal station: unknown
[17:22:38 UTC] RCC: unknown
[17:22:38 UTC] Originator: MMSI 538006168 Country: Marshall Islands (Re
[17:22:38 UTC] public of the)
[17:22:38 UTC] Ship call.
[17:22:38 UTC] First Telecommand: Test Request
[17:22:38 UTC] Second Telecommand: No Information
[17:22:38 UTC] EOS: RQ
[17:22:38 UTC] [CRC GOOD]
[17:23:47 UTC] [DSC 12/08/2018 13:23]
[17:23:47 UTC] Format: Individual
[17:23:47 UTC] Category: Safety
[17:23:47 UTC] Destination: MMSI 003660003 Country: United States of Ame
[17:23:47 UTC] rica
[17:23:47 UTC] Coastal station: unknown
[17:23:47 UTC] RCC: unknown
[17:23:47 UTC] Originator: MMSI 636013748 Country: Liberia (Republic of
[17:23:47 UTC] )
[17:23:47 UTC] Ship call.
[17:23:47 UTC] First Telecommand: Test Request
[17:23:47 UTC] Second Telecommand: No Information
[17:23:47 UTC] EOS: RQ
[17:23:47 UTC] [CRC GOOD]
[17:23:56 UTC] [DSC 12/08/2018 13:23]
[17:23:56 UTC] Format: Individual
[17:23:56 UTC] Category: Safety
[17:23:56 UTC] Destination: MMSI 003669997 Country: United States of Ame
[17:23:56 UTC] rica
[17:23:56 UTC] Coastal station: Miami
[17:23:56 UTC] RCC: MRCC Miami/MRCC Norfolk
[17:23:56 UTC] Originator: MMSI 257145000 Country: Norway
[17:23:56 UTC] Ship call.
[17:23:56 UTC] Ship is equipped with Inmarsat B, C, or M station.
[17:23:56 UTC] First Telecommand: Test Request
[17:23:56 UTC] Second Telecommand: No Information
[17:23:56 UTC] EOS: RQ
[17:23:56 UTC] [CRC GOOD]
[17:30:55 UTC] [DSC 12/08/2018 13:30]
[17:30:55 UTC] Format: Individual
[17:30:55 UTC] Category: Safety
[17:30:55 UTC] Destination: MMSI 003669998 Country: United States of Ame
[17:30:55 UTC] rica
[17:30:55 UTC] Coastal station: New Orleans
[17:30:55 UTC] RCC: MRCC New Orleans/MRCC Norfolk
[17:30:55 UTC] Originator: MMSI 431223000 Country: Japan
[17:30:55 UTC] Ship call.
[17:30:55 UTC] Ship is equipped with Inmarsat B, C, or M station.
[17:30:55 UTC] First Telecommand: Test Request
[17:30:55 UTC] Second Telecommand: No Information
[17:30:55 UTC] EOS: RQ
[17:30:55 UTC] [CRC GOOD]
[17:33:39 UTC] [DSC 12/08/2018 13:33]
[17:33:39 UTC] Format: Individual
[17:33:39 UTC] Category: Safety
[17:33:39 UTC] Destination: MMSI 003660003 Country: United States of Ame
[17:33:39 UTC] rica
[17:33:39 UTC] Coastal station: unknown
[17:33:39 UTC] RCC: unknown
[17:33:39 UTC] Originator: MMSI 352843000 Country: Panama (Republic of)
[17:33:39 UTC] Ship call.
[17:33:39 UTC] Ship is equipped with Inmarsat B, C, or M station.
[17:33:39 UTC] First Telecommand: Test Request
[17:33:39 UTC] Second Telecommand: No Information
[17:33:39 UTC] EOS: RQ
[17:33:39 UTC] [CRC GOOD]
[17:34:24 UTC] [DSC 12/08/2018 13:34]
[17:34:24 UTC] Format: Individual
[17:34:24 UTC] Category: Safety
[17:34:24 UTC] Destination: MMSI 007250170 Country: Chile
[17:34:24 UTC] Coastal station: Talcahuano
[17:34:24 UTC] RCC: MRCC Talcahuano
[17:34:24 UTC] Originator: MMSI 357628000 Country: Panama (Republic of)
[17:34:24 UTC] Ship call.
[17:34:24 UTC] Ship is equipped with Inmarsat B, C, or M station.
[17:34:24 UTC] First Telecommand: Test Request
[17:34:24 UTC] Second Telecommand: No Information
[17:34:24 UTC] EOS: RQ
[17:34:24 UTC] [CRC GOOD]
[17:36:14 UTC] [DSC 12/08/2018 13:36]
[17:36:14 UTC] Format: Individual
[17:36:14 UTC] Category: Safety
[17:36:14 UTC] Destination: MMSI 003669992 Country: United States of Ame
[17:36:14 UTC] rica
[17:36:14 UTC] Coastal station: San Juan, PR.
[17:36:14 UTC] RCC: MRCC San Juan/MRCC Norfolk
[17:36:14 UTC] Originator: MMSI 311000551 Country: Bahamas (Commonwealt
[17:36:14 UTC] h of the)
[17:36:14 UTC] Ship call.
[17:36:14 UTC] First Telecommand: Test Request
[17:36:14 UTC] Second Telecommand: No Information
[17:36:14 UTC] EOS: RQ
[17:36:14 UTC] [CRC GOOD]
[17:36:26 UTC] [DSC 12/08/2018 13:36]
[17:36:26 UTC] Format: Individual
[17:36:26 UTC] Category: Safety
[17:36:26 UTC] Destination: MMSI 003660003 Country: United States of Ame
[17:36:26 UTC] rica
[17:36:26 UTC] Coastal station: unknown
[17:36:26 UTC] RCC: unknown
[17:36:26 UTC] Originator: MMSI 235076276 Country: United Kingdom of Gr
[17:36:26 UTC] eat Britain and Northern Ireland
[17:36:26 UTC] Ship call.
[17:36:26 UTC] First Telecommand: Test Request
[17:36:26 UTC] Second Telecommand: No Information
[17:36:26 UTC] EOS: RQ
[17:36:26 UTC] [CRC GOOD]
[17:40:35 UTC] [DSC 12/08/2018 13:40]
[17:40:35 UTC] Format: Individual
[17:40:35 UTC] Category: Safety
[17:40:35 UTC] Destination: MMSI 003660003 Country: United States of Ame
[17:40:35 UTC] rica
[17:40:35 UTC] Coastal station: unknown
[17:40:35 UTC] RCC: unknown
[17:40:35 UTC] Originator: MMSI 352843000 Country: Panama (Republic of)
[17:40:35 UTC] Ship call.
[17:40:35 UTC] Ship is equipped with Inmarsat B, C, or M station.
[17:40:35 UTC] First Telecommand: Test Request
[17:40:35 UTC] Second Telecommand: No Information
[17:40:35 UTC] EOS: RQ
[17:40:35 UTC] [CRC GOOD]
[17:42:33 UTC] [DSC 12/08/2018 13:42]
[17:42:33 UTC] Format: Individual
[17:42:33 UTC] Category: Safety
[17:42:33 UTC] Destination: MMSI 003669998 Country: United States of Ame
[17:42:33 UTC] rica
[17:42:33 UTC] Coastal station: New Orleans
[17:42:33 UTC] RCC: MRCC New Orleans/MRCC Norfolk
[17:42:33 UTC] Originator: MMSI 538007002 Country: Marshall Islands (Re
[17:42:33 UTC] public of the)
[17:42:33 UTC] Ship call.
[17:42:33 UTC] First Telecommand: Test Request
[17:42:33 UTC] Second Telecommand: No Information
[17:42:33 UTC] EOS: RQ
[17:42:33 UTC] [CRC GOOD]
[17:44:17 UTC] [DSC 12/08/2018 13:44]
[17:44:17 UTC] Format: Individual
[17:44:17 UTC] Category: Safety
[17:44:17 UTC] Destination: MMSI 003669991 Country: United States of Ame
[17:44:17 UTC] rica
[17:44:17 UTC] Coastal station: Boston
[17:44:17 UTC] RCC: MRCC Boston/MRCC Norfolk
[17:44:17 UTC] Originator: MMSI 431223000 Country: Japan
[17:44:17 UTC] Ship call.
[17:44:17 UTC] Ship is equipped with Inmarsat B, C, or M station.
[17:44:17 UTC] First Telecommand: Test Request
[17:44:17 UTC] Second Telecommand: No Information
[17:44:17 UTC] EOS: RQ
[17:44:17 UTC] [CRC GOOD]
[17:45:55 UTC] [DSC 12/08/2018 13:45]
[17:45:55 UTC] Format: Individual
[17:45:55 UTC] Category: Safety
[17:45:55 UTC] Destination: MMSI 003660003 Country: United States of Ame
[17:45:55 UTC] rica
[17:45:55 UTC] Coastal station: unknown
[17:45:55 UTC] RCC: unknown
[17:45:55 UTC] Originator: MMSI 538005805 Country: Marshall Islands (Re
[17:45:55 UTC] public of the)
[17:45:55 UTC] Ship call.
[17:45:55 UTC] First Telecommand: Test Request
[17:45:55 UTC] Second Telecommand: No Information
[17:45:55 UTC] EOS: RQ
[17:45:55 UTC] [CRC GOOD]
[17:47:25 UTC] [DSC 12/08/2018 13:47]
[17:47:25 UTC] Format: Individual
[17:47:25 UTC] Category: Safety
[17:47:25 UTC] Destination: MMSI 003669995 Country: United States of Ame
[17:47:25 UTC] rica
[17:47:25 UTC] Coastal station: Portsmouth(CAMSLANT)
[17:47:25 UTC] RCC: MRCC Portsmouth
[17:47:25 UTC] Originator: MMSI 431223000 Country: Japan
[17:47:25 UTC] Ship call.
[17:47:25 UTC] Ship is equipped with Inmarsat B, C, or M station.
[17:47:25 UTC] First Telecommand: Test Request
[17:47:25 UTC] Second Telecommand: No Information
[17:47:25 UTC] EOS: RQ
[17:47:25 UTC] [CRC GOOD]
[17:50:29 UTC] [DSC 12/08/2018 13:50]
[17:50:29 UTC] Format: Individual
[17:50:29 UTC] Category: Safety
[17:50:29 UTC] Destination: MMSI 003669995 Country: United States of Ame
[17:50:29 UTC] rica
[17:50:29 UTC] Coastal station: Portsmouth(CAMSLANT)
[17:50:29 UTC] RCC: MRCC Portsmouth
[17:50:29 UTC] Originator: MMSI 373961000 Country: unknown
[17:50:29 UTC] Ship call.
[17:50:29 UTC] Ship is equipped with Inmarsat B, C, or M station.
[17:50:29 UTC] First Telecommand: Test Request
[17:50:29 UTC] Second Telecommand: No Information
[17:50:29 UTC] EOS: RQ
[17:50:29 UTC] [CRC GOOD]
[17:59:11 UTC] [CRC BAD]
[18:05:04 UTC] [DSC 12/08/2018 14:05]
[18:05:04 UTC] Format: Individual
[18:05:04 UTC] Category: Safety
[18:05:04 UTC] Destination: MMSI 003660003 Country: United States of Ame
[18:05:04 UTC] rica
[18:05:04 UTC] Coastal station: unknown
[18:05:04 UTC] RCC: unknown
[18:05:04 UTC] Originator: MMSI 311000388 Country: Bahamas (Commonwealt
[18:05:04 UTC] h of the)
[18:05:04 UTC] Ship call.
[18:05:04 UTC] First Telecommand: Test Request
[18:05:04 UTC] Second Telecommand: No Information
[18:05:04 UTC] EOS: RQ
[18:05:04 UTC] [CRC GOOD]
[18:06:29 UTC] [DSC 12/08/2018 14:06]
[18:06:29 UTC] Format: Individual
[18:06:29 UTC] Category: Safety
[18:06:29 UTC] Destination: MMSI 003660003 Country: United States of Ame
[18:06:29 UTC] rica
[18:06:29 UTC] Coastal station: unknown
[18:06:29 UTC] RCC: unknown
[18:06:29 UTC] Originator: MMSI 311000388 Country: Bahamas (Commonwealt
[18:06:29 UTC] h of the)
[18:06:29 UTC] Ship call.
[18:06:29 UTC] First Telecommand: Test Request
[18:06:29 UTC] Second Telecommand: No Information
[18:06:29 UTC] EOS: RQ
[18:06:29 UTC] [CRC GOOD]
https://www.sigidwiki.com/wiki/GMDSS_Digital_Selective_Calling