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Hi! I'm also a ham and I've heard a lot of undecoded digital voice transmissions. They are totally different - it's just a noise, like a transmission of an old modem or fax machine. They are trying to occupy the lowest bandwidth possible, so the spectral density is obviously high. Sometimes you can hear a repeating frame structure, it then resembles sounds of a running diesel engine or similar machine. It sounds totally differently than this. This transmission also doesn't have a typical pattern of a voice comms - alternating of speakers/parties. This looks like a monolog, like an uninterrupted broadcast of strange data from one sender to maybe more receivers. So, IMHO, it's not a digital ham voice operation, somebody just grabbed the band obviously used for DV, but uses it for something else... With regards, Pavel. > > Yeah, that is likely. > > I have a ham friend who is active on DRM on shortwave. I'll ask him > what common frequencies on 75m are being used. > > 73, Zack W9SZ > > > On Mon, Feb 1, 2010 at 6:36 PM, KD7JYK DM09 <kd7...@earthlink.net> wrote: > > Visit http://mailman.qth.net/mailman/listinfo/spooks to unsubscribe from > > this list > > > > Although SSTV is permitted there, it is the center frequency for DV (digital > > voice) or "Vocoders". > > > > Kurt > > > > ----- Original Message ----- > > > > : Contrary to what I said in my previous mail, I don't think that it is a > > vocoder. > > : I have the signal very loud on my radio now. I have no idea what it is > > actually. > > > > ______________________________________________________________ > > Spooks mailing list > > Home: http://mailman.qth.net/mailman/listinfo/spooks > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Spooks@mailman.qth.net > > > > 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:Spooks@mailman.qth.net > > 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:Spooks@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
