Unidentified Digital mode

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Unidentified Digital mode
SDRSharp 2018-01-30 11-40-43.jpg
Frequencies 782.425 MHz,782.15 MHz,782.7 MHz
Frequency Range 782.15 MHz - 782.7 MHz
Bandwidth 50 kHz
Location Finland Hanko-Tammisaari area
Short Description Tetra sounding signal that i cant figure out
I/Q Raw Recording
Audio Sample

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 http://skanneri.info/filutjlx/SDRSharp_20180130_093133Z_782425000Hz_IQ.wav

unfiltered FMFrequency Modulation file http://skanneri.info/filutjlx/SDRSharp_20180130_092655Z_782425000Hz_AF.wav