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Message from Calico at Tuesday, 20-Dec-11 13:04:48 GMT
Radiotelephony via the terrestrial route has been phased out and most coast / shore stations have closed down since circa 2000. Also radio officers that used to run the service aboard ships have been decommissioned and the watch from 8 hours a day has become 24/7 also via GMDSS, where you can monitor lots of traffic,with appropriate decoders and individual ship's logging data.
Most of radiotelephone traffic migrated to Inmarsat, that's far more reliable as in the High Seas, mobile telephony is out of range.
Last time I checked Olympia Radio still accepted A3J as well as HF/DSCalls etc
Monitor 4207.5, 6312, 8414.5 MHz etc
Press Bulletins too, at 06.00, 13.00 and 21.00 z
etc
Most of radiotelephone traffic migrated to Inmarsat, that's far more reliable as in the High Seas, mobile telephony is out of range.
Last time I checked Olympia Radio still accepted A3J as well as HF/DSCalls etc
Monitor 4207.5, 6312, 8414.5 MHz etc
Press Bulletins too, at 06.00, 13.00 and 21.00 z
etc
Message from Calico at Thursday, 05-Jan-12 15:39:37 GMT
Speaking of marine and DSC (Digital Selective Call) one can track ships' whereabouts if interested:
-Monitor relevant traffic on marine frequencies:
for DSC 2177.0, 2187.5, 2189.5, 4207.5, 6312.0, 8414.5, 12577.0, 16804.5 kHz.
-Use a decoder (e.g. MultiPSK) to get the transmission content:
247284700-I (routine) from [Bilbao Radio]-E test ACK [12-01-05 14:55:26]
-Look up ship's particulars:
This one is "Filomena Lembo" whose latest whereabouts can be seen at:
http://www.marinetraffic.com/ais/shipdetails.aspx?MMSI=247284700
Occasionally, you come across ships in DISTRESS, (ships sinking, on fire) as the one last night:
FORMAT SPECIFIER: ALL SHIPS
CATEGORY: DISTRESS
SELF IDENTIFICATION: 002241026 Spain
TELECOMMAND: DISTRESS ACKNOWLEDGEMENT
IDENTIFICATION OF SHIP IN DISTRESS: 218768000 Germany
DISTRESS NATURE: UNDESIGNATED DISTRESS
DISTRESS COORDINATES: NW LATITUDE 28 deg 8 min NORTH LONGITUDE 15 deg 25 min WEST
TIME UTC: 22 : 46
Every now and then one can get surprised with what's on the airwaves.
-Monitor relevant traffic on marine frequencies:
for DSC 2177.0, 2187.5, 2189.5, 4207.5, 6312.0, 8414.5, 12577.0, 16804.5 kHz.
-Use a decoder (e.g. MultiPSK) to get the transmission content:
247284700-I (routine) from [Bilbao Radio]-E test ACK [12-01-05 14:55:26]
-Look up ship's particulars:
This one is "Filomena Lembo" whose latest whereabouts can be seen at:
http://www.marinetraffic.com/ais/shipdetails.aspx?MMSI=247284700
Occasionally, you come across ships in DISTRESS, (ships sinking, on fire) as the one last night:
FORMAT SPECIFIER: ALL SHIPS
CATEGORY: DISTRESS
SELF IDENTIFICATION: 002241026 Spain
TELECOMMAND: DISTRESS ACKNOWLEDGEMENT
IDENTIFICATION OF SHIP IN DISTRESS: 218768000 Germany
DISTRESS NATURE: UNDESIGNATED DISTRESS
DISTRESS COORDINATES: NW LATITUDE 28 deg 8 min NORTH LONGITUDE 15 deg 25 min WEST
TIME UTC: 22 : 46
Every now and then one can get surprised with what's on the airwaves.
Message from Calico at Friday, 06-Jan-12 01:04:40 GMT
Yet another two-tone alarm, "Abandon Ship" this time.
-------------------------------------------------------------
DECODED AT: 23:46:57 05/01/2012
FORMAT SPECIFIER: ALL SHIPS
CATEGORY: DISTRESS
SELF IDENTIFICATION: 002320014 UK
TELECOMMAND: DISTRESS ACKNOWLEDGEMENT
IDENTIFICATION OF SHIP IN DISTRESS: 261000360 Poland
DISTRESS NATURE: ABANDONING SHIP
-----------------------------------------------------------
Relevant note:
Such signals are then relayed to Search And Rescue for operations to commence.
In this case Falmouth Coastguard, in Cornwall, acknowledges and proceeds as required.
But as radio enthusiasts, we can be in-the-know before even the SAR crews know.
We can then monitor rescue operations on the right frequencies from the very start.
(This distress message was captured-several times-over 2187.5 kHz.)
-------------------------------------------------------------
DECODED AT: 23:46:57 05/01/2012
FORMAT SPECIFIER: ALL SHIPS
CATEGORY: DISTRESS
SELF IDENTIFICATION: 002320014 UK
TELECOMMAND: DISTRESS ACKNOWLEDGEMENT
IDENTIFICATION OF SHIP IN DISTRESS: 261000360 Poland
DISTRESS NATURE: ABANDONING SHIP
-----------------------------------------------------------
Relevant note:
Such signals are then relayed to Search And Rescue for operations to commence.
In this case Falmouth Coastguard, in Cornwall, acknowledges and proceeds as required.
But as radio enthusiasts, we can be in-the-know before even the SAR crews know.
We can then monitor rescue operations on the right frequencies from the very start.
(This distress message was captured-several times-over 2187.5 kHz.)
Message from ku4a at Saturday, 07-Jan-12 15:22:29 GMT
Happy New Year, Cal!
Message from Calico at Saturday, 07-Jan-12 16:23:19 GMT
And a very happy (as well as radio-active) for you too KU !
73 from Dorset-Land :)
73 from Dorset-Land :)
Message from DJZiskin at Monday, 30-Apr-12 15:37:23 GMT
As a maritime radio-electronics officer, which does not by any means make me an
expert (an expert is someone who is one chapter ahead in the book...), allow me
to comment, please. Or rant, as you see fit...
Since the advent of GMDSS and the gradual removal of the radio officer, more and more ship captains have come to lament this action. Not for the removal of crew (who was considered by many as not a "real" sailor), but there is no longer any individual aboard capable of making needed maintenance and repairs to vital items of equipment: Radar, autopilot, even something as simple as the sound-powered phone system which all ships have.
In January 2010, I was sent to Haiti and spent approx 2-1/2 months in Port-
Au-Prince harbor and all communications went by Inmarsat or Iridium. Local
chit-chat was via vhf. The gmdss console stayed silent except for daily tests
and I used it for ham radio.
Yes, there are those certificated as STCW GMDSS operators and as maintainers.
The vast majority fall into the same category as someone who takes a week-end
amateur licensing class and has an extra-class ticket and has never put a
PL-259 on a piece of coax. It is a good place to start learning; however, the
licenses assume there is knowledge and experience that is nonexistent. And
yes, I do have an amateur license: AG6E.
I would also point out that since the advent of GMDSS, false alarms - which were essentially nonexistent prior thereto, have been as high as 99% of distress calls received and all require the utilization of assets to reach
a determination.
OK, so much for the ranting and raving...
expert (an expert is someone who is one chapter ahead in the book...), allow me
to comment, please. Or rant, as you see fit...
Since the advent of GMDSS and the gradual removal of the radio officer, more and more ship captains have come to lament this action. Not for the removal of crew (who was considered by many as not a "real" sailor), but there is no longer any individual aboard capable of making needed maintenance and repairs to vital items of equipment: Radar, autopilot, even something as simple as the sound-powered phone system which all ships have.
In January 2010, I was sent to Haiti and spent approx 2-1/2 months in Port-
Au-Prince harbor and all communications went by Inmarsat or Iridium. Local
chit-chat was via vhf. The gmdss console stayed silent except for daily tests
and I used it for ham radio.
Yes, there are those certificated as STCW GMDSS operators and as maintainers.
The vast majority fall into the same category as someone who takes a week-end
amateur licensing class and has an extra-class ticket and has never put a
PL-259 on a piece of coax. It is a good place to start learning; however, the
licenses assume there is knowledge and experience that is nonexistent. And
yes, I do have an amateur license: AG6E.
I would also point out that since the advent of GMDSS, false alarms - which were essentially nonexistent prior thereto, have been as high as 99% of distress calls received and all require the utilization of assets to reach
a determination.
OK, so much for the ranting and raving...
Message from Calico at Friday, 11-May-12 00:21:11 GMT
Hello Djziskin,
Great to have the contribution of a"sparky"in our ranks! Glad that you experienced the fun of SAIT, JRC, etc consoles, what an era, what a QRL, the best there was in the high seas !
Don't know if you keep in touch with the GMDSS frequencies, not much interesting traffic anymore like there used to be on working frequencies with GKA, GKB, KSM, SVA, etc. Analogue Inmarsat, is history too, but hey ho we are not history yet, may god bless the old Katsumi..
Dah di dah
Tim (Dorset, UK)
Great to have the contribution of a"sparky"in our ranks! Glad that you experienced the fun of SAIT, JRC, etc consoles, what an era, what a QRL, the best there was in the high seas !
Don't know if you keep in touch with the GMDSS frequencies, not much interesting traffic anymore like there used to be on working frequencies with GKA, GKB, KSM, SVA, etc. Analogue Inmarsat, is history too, but hey ho we are not history yet, may god bless the old Katsumi..
Dah di dah
Tim (Dorset, UK)
Message from Mosiout1936 at Saturday, 01-Aug-20 07:37:52 GMT
Wonderful information. Many thanks! https://ship-tracking.net/ship-tracking/
Message from GeoffW at Wednesday, 05-Aug-20 15:16:52 GMT
A couple of decoders you might like to try are:-
YADD and YAND from the following site (The names will make sense when you find the progs down the page)
http://www.ndblist.info/datamodes.htm
YADD and YAND from the following site (The names will make sense when you find the progs down the page)
http://www.ndblist.info/datamodes.htm
Message from Wanderlust99 at Thursday, 06-Jun-24 22:09:03 GMT
Thank you for sharing such informative content. Visiting your website has been a delight. You've gained a loyal follower! https://kourio-io.github.io
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