Unidientified "MFSK-13"

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Unidientified "MFSKMultiple Frequency Shift-Keying-13"
Unid mfsk 13.PNG
Frequencies 4871kHz4,871,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
4.871 MHzMegaHertz (MHz) 10^6 Hz
Frequency Range 4871000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).4,871 kHzKiloHertz (kHz) 10^3 Hz
4.871 MHzMegaHertz (MHz) 10^6 Hz
4871000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).4,871 kHzKiloHertz (kHz) 10^3 Hz
4.871 MHzMegaHertz (MHz) 10^6 Hz
Mode USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables)
Modulation MFSKMultiple Frequency Shift-Keying
Bandwidth 3.2kHz3,200 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
0.0032 MHzMegaHertz (MHz) 10^6 Hz
3.2 kHzKiloHertz (kHz) 10^3 Hz
0.0032 MHzMegaHertz (MHz) 10^6 Hz
3.2 kHzKiloHertz (kHz) 10^3 Hz
0.0032 MHzMegaHertz (MHz) 10^6 Hz
Location
Short Description Unidentified 13 tone MFSKMultiple Frequency Shift-Keying signal, measures about 32 milliseconds per tone, looks like serdolik with less tones and slower. Possible russian diplomatic signal
I/Q Raw Recording
Audio Sample
Courtesy of user Fiber

SamplesSamples

Sample 1

Sample 2

Sample 3

FrequenciesFrequencies

4871 USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables), ~3.2kHz bandwidth

Related signal?Related signal?

2017-08-08 2205z 4511kHz begins with similar 13 tone pattern, but switches to 8? seems to be double the speed as well.

This signal seems to be similar, if not related