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4622,5kHz is 10 to 20dB stronger than 4625kHz UVB-76 sig here in NE France / WWL JN29 JRC NRD545 + 10m LW no idea of what it is, strong carrier... Fabien Le 29 sept. 2010 à 21:46, Kevin Elliott a écrit : > > Visit http://mailman.qth.net/mailman/listinfo/spooks to unsubscribe from this > list > > Hey folks, > > I know there's been a lot of activity on 4.625 over the last couple of weeks > since UVB-76 went down (possibly for maintenance). I have been watching it > closely (via the justin.tv and audio streams) for the last couple of days > and find a few things interesting. > > * When it is very late in the USA, I notice that activity nearly > disappears (around 2AM PST / 5AM EST). No morse has been noticeable during > this period, and the waterfall shows a light carrier signal that seems to > very slowly sweep over an hour. > * When it is daytime in the USA, it's flourishing with activity. For > example, right now there is a loud and strong whine, combined with morse and > what sounds like some kind of packet signal. The waterfall shows activity > across the 1kHz spread, that reminds me of PSK activity (although it doesn't > sound like it). What is most interesting to watch and listen to is a > "swooshing" that seems to occupy about 1kHz (right of the strong whine at > 4622.5kHz). I have only heard and seen this once or twice. When the swoosh > (sounds like mild ocean waves or really mild white noise) kicks in, the > intensity/color of the strong wine at 4622.5kHz decreases to compensate for > the increase signal across the 1kHz spread. Is this some kind of data > transfer? When you see it visually, it seems like it must be, but it's > innocent only by sound as the "waves" sound too peaceful to be data. > * A pulsing packet is heard in 0.4kHz left of the strong whine at > 4622.5kHz, but only infrequently, and lasts for about 10 seconds. Any ideas > what encoding this might be? > > Is anyone aware of any software that can decode multiple signals at once > from an audio stream? It would be nice to select chunks of the band and > assign protocols to decode. I'd prefer OSX, but would settle for > Windows/Linux. > > Any places to chat about this phenomena in real time online? > > -Kevin > ______________________________________________________________ > Spooks mailing list > Home: http://mailman.qth.net/mailman/listinfo/spooks > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ Spooks mailing list Home: http://mailman.qth.net/mailman/listinfo/spooks Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
