Thanks for the reply. I do know about military use of UHF freqs, in a band that is just about double the VHF freqs, if memory serves me. Such as 121.5 and 243.0, again if memory serves. But I though a good deal of oceanic traffic was HF, and I thought still was. VHF does not go that far, even if one side is at 40,000 feet. And I thought that some of ZBW comms dealt with Atlantic traffic.
I know I have listened to aircraft directly, many years ago, reporting from mid-ocean at several bands in the HF region. I also remember listening to wx voice from a series of xmitters in round robin fashion, for something like 10 minutes each, covering an hour. I seem to remember one was at 3001 kHz. I even remember that the NY guy had a very gravelly voice, and that his chair would squeak every once in a while. I could imagine him sitting in a little room, reading the reports, probably every six hours or so.
Then you would hear a Canadian station, and sometimes somebody on the other side of the pond, reporting wx from a standard group of airports. It is my memory that there were about 4 to six stations in the group, and that there were simultaneous broadcasts on several freqs. I sometimes did this listening on a research vessel somewhere in the North Atlantic, to pass the night watch hours. I did not know where some of the reporting stations were, and would then get to the charts, trying to match the names I would hear with wx stations all around the North Atlantic. Part of my misspent youth.
I made a quick stop at KC!XX and will spend more time there, after I get this off. Good to talk, and thanks for the whole idea behind liveatc.net. I have learned a lot. 73
