ka3jjz
Wiki Admin Emeritus
This list is very old, so it's suspect as to how accurate it is, but this lists all the known HF marine channels as allocated at the time by ITU regs;
http://www.ominous-valve.com/itufqs.txt
A lot of activity has moved to satellite, cell and secured HF modes such as Pactor II or III using Huffman compression techniques, rendering them unreadable to almost all hobby level decoders. Voice is pretty much gone, except for the rare reports seen on the UDXF from time to time - very rare...
However what isn't old, are the half dozen or so GMDSS channels, which are now used a lot more than when they had been just released. There are numerous software packages that can convert the calls to readable text, and you can find a list here...
https://www.sigidwiki.com/wiki/GMDSS_Digital_Selective_Calling
Note that as noted elsewhere 2182 khz is no longer guarded...Mike
http://www.ominous-valve.com/itufqs.txt
A lot of activity has moved to satellite, cell and secured HF modes such as Pactor II or III using Huffman compression techniques, rendering them unreadable to almost all hobby level decoders. Voice is pretty much gone, except for the rare reports seen on the UDXF from time to time - very rare...
However what isn't old, are the half dozen or so GMDSS channels, which are now used a lot more than when they had been just released. There are numerous software packages that can convert the calls to readable text, and you can find a list here...
https://www.sigidwiki.com/wiki/GMDSS_Digital_Selective_Calling
Note that as noted elsewhere 2182 khz is no longer guarded...Mike