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Hi Everyone: Initially, I had difficulties understanding how an amateur--even a very smart one--could generate Sam's data transmission (the "buzz"). Clearly, it is some form of QAM variant (PSK and AM combined), as it shows amplitude, frequency, and phase variations. These protocols are very hard to generate cleanly with PC software, and do not lend themselves to the venue of amateur SWL hackers. QAM usually is used with wireless and ADSL protocols, along with television. It is not widely used on SW, unless by government. But then I realized that "advanced-looking QAM" can be generated with hardware such as a newer dial-up modem. Eureka! Just bring up a low baud modem session over V.35, and a capacitance tap to your sound card, and it looks like an advanced SW protocol, much like the Russian 93-tone OFDM. If this is a SWL hacker, he is very ingenious indeed! Perhaps we should institute a yearly "Varmint" holiday in his/her honor? Dave :-) -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.300 / Virus Database: 265.8.8 - Release Date: 2/14/2005 ______________________________________________________________ Spooks mailing list Home: http://mailman.qth.net/mailman/listinfo/spooks Help: http://mailman.qth.net/faq.htm Post: mailto:[email protected] - Visit http://www.spynumbers.com/ for complete information about Spy Numbers Stations
