Talk:Unknown 164p3
Seems to be the same signal as this, which is still unknown.
https://www.sigidwiki.com/wiki/Unknown_Trunking/Telemetry
Fiber (talk) 10:18, 2 November 2017 (NZDT)
I never actually saw that relationship, you're right. The Unknown_trunking/telemetry is one of the oldest entries on this site. It was for a long time labeled as 'logic control trunking' but later reports found that to be false. That signal is older than my time on this website. Still have no clue what it is. The IQQuadrature signals form the basis of complex RF signal modulation and demodulation, both in hardware and in software, as well as in complex signal analysis. should help eventually. --Cartoonman (talk) 16:24, 2 November 2017 (NZDT)
Teemo 2017/11/03 01:00 UTC
From which part of austria is this recording? Because here in graz, there's a very similar signal at the upper end of the 70cm band, which i believe is used by our public transportation company (Sample coming soon). Initially i thought it was for updating radio-controlled bus time tables, but now i'd doubt that.
If you look at the bottom of this page: https://www.sigidwiki.com/wiki/Unknown_Trunking/Telemetry you see in Additional Images on the last box was a sample submitted a long time ago by a user, claiming it was from a German transportation company, Ustra, recorded in Hanover. They also thought it was for bus timetables. I haven't done a full analysis on this signal, I think I once tried but I couldn't get any meaningful features from it. There is very likely a link to transportation and this signal. I'm thinking MDTMobile Data Terminal, A mobile data terminal (MDT) is a computerized device used in public transit vehicles, taxicabs, commercial trucking fleets, military logistics, and emergency vehicles, such as police cars, to communicate with a central dispatch office.-based services, as it's similar in behavior to that of known MDTMobile Data Terminal, A mobile data terminal (MDT) is a computerized device used in public transit vehicles, taxicabs, commercial trucking fleets, military logistics, and emergency vehicles, such as police cars, to communicate with a central dispatch office.'s such asDigital Dispatch Systems MDT and Gandalf MDT. --Cartoonman (talk) 14:37, 3 November 2017 (NZDT)
