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#1
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Wha'sup on 500 Khz ??
Time was when 500 Khz was a most important party line, calling and
distress freq for maritime mobile CW. It's been years since I've listened there and heard active CW as I donated my lowfer RCVR to Schoals Marine Lab sometime in the mid 70's. Recently got lowfer capability again, my Sat800 (which has more digital artifacts on lowfer than New Orleans has bedbugs) and a very recently purchased BC-348Q. Morse CW in the western world is long gone, but I expected to hear some third world vessels still using it. Nada. zip. null. What I'm hearing is some strange signal which seems to have a surpressed carrier on 500.0 and sidebands both above and below at about 6 khz intervals...ie +/-6, 12, 18, getting radidly weaker as they get further from 500 khz. They are modulated A-2, MCW, with what seems to be code with three characters...a dit, a short dah, and a long dah send in the format {long dah, two dits, variable number of short dahs (n= 3 to ~20), long dah, pause} with timing like a busy signal on a landline phone. ?? Any one else with a lowfer RCVR wanna take a listen and see if they can hear it ?? I've been hearing it from 0000z to about 0300z. ?? anyone have any idea what this might be ?? |
#2
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wrote:
?? anyone have any idea what this might be ?? I bet someone in the LWCA knows. Try joining their message board: http://lwca.org/mb/index.htm ------------------------------------------------------------ Nations are like leaves; they change color before they fall. ------------------------------------------------------------ |
#3
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Have you tried turning off various appliances around the house? I've heard
stuff like that from switching power supplies, cable modems, PC's, etc. I have a signal that's all over the aircraft band here (not so strong as to make me look for it yet) that sounds just like CW with nicely spaced characters, but it's just gibberish. I'm sure one of these microprocessor based thingies around me is doing it, just don't know which one. BTW, if you're looking for something to do around 500khz, try NAVTEX at 518khz. I have logged stations well into Canada and down through the Carribean from NC. I've heard marine stuff on 2182khz before, but never the 500khz freq. John "William Mutch" wrote in message ell.edu... Time was when 500 Khz was a most important party line, calling and distress freq for maritime mobile CW. It's been years since I've listened there and heard active CW as I donated my lowfer RCVR to Schoals Marine Lab sometime in the mid 70's. Recently got lowfer capability again, my Sat800 (which has more digital artifacts on lowfer than New Orleans has bedbugs) and a very recently purchased BC-348Q. Morse CW in the western world is long gone, but I expected to hear some third world vessels still using it. Nada. zip. null. What I'm hearing is some strange signal which seems to have a surpressed carrier on 500.0 and sidebands both above and below at about 6 khz intervals...ie +/-6, 12, 18, getting radidly weaker as they get further from 500 khz. They are modulated A-2, MCW, with what seems to be code with three characters...a dit, a short dah, and a long dah send in the format {long dah, two dits, variable number of short dahs (n= 3 to ~20), long dah, pause} with timing like a busy signal on a landline phone. ?? Any one else with a lowfer RCVR wanna take a listen and see if they can hear it ?? I've been hearing it from 0000z to about 0300z. ?? anyone have any idea what this might be ?? |
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