Unknown 164p3

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Unknown 164p3
Frequencies 164.3 MHz
Frequency Range 164.3 MHz - 164.3 MHz
Mode NFM
Bandwidth 15 kHz
Location Austria
Short Description

Unknown Digital Signal

IQ File: https://www.dropbox.com/s/tedffkrug9pkbu6/SDRSharp_20171031_182056Z_164373216Hz_IQ.7z?dl=1
I/Q Raw Recording
Audio Sample

Most likely it is telemetry for pubic transportation. You can also hear it on 173.275 in Salzburg,there it is confirmed that this comes from the so callen "Obus" which is a electric bus. The buses also can controll traffic lights,but I have to find this frequency. For audio communication the are using 173.075 for communication,and 168.475 Mhz But it would be nice to get the name of the used protocoll.

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. File: https://www.dropbox.com/s/tedffkrug9pkbu6/SDRSharp_20171031_182056Z_164373216Hz_IQ.7z?dl=1 or https://mega.nz/#!zNtiXagA!fqCSHkYNU1CvWyPfX_wPulfJnD7S8iVVe5lLhNOyIuc (both are the same, just different mirror)

Same signal reported here: https://www.sigidwiki.com/wiki/Unknown_Trunking/Telemetry