Unknown 13p361 MFSK-17 signal
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|---|---|
| Frequencies | 13.361 MHz |
| Frequency Range | 13.361 MHz - 13.361 MHz |
| Mode | USB |
| Modulation | MFSK |
| ACF | — |
| Bandwidth | 37.5 kHz |
| Location | Worldwide |
| Short Description | Unknown MFSK-17 signal with wide bandwidth |
| I/Q Raw Recording | Download file |
| Audio Sample | |
This signal was spotted on Sep 30, 2024. It seems to be an MFSKMultiple Frequency Shift-Keying-17 signal with about 2.3 kHzKiloHertz (kHz) 10^3 Hz spacing between tones and about 37.5 kHzKiloHertz (kHz) 10^3 Hz total bandwidth. The source and purpose of this signal are unknown. It resembles Russian MFSKMultiple Frequency Shift-Keying signals such as XPB but has a much higher bandwidth. It's also possible that this is some kind of a frequency hopping (FHSS) signal, but it's less likely.
Samples[edit]
The showcase audio sample is USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) with 20 kHzKiloHertz (kHz) 10^3 Hz bandwidth, covering the lowest 9 tones. The showcase 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. sample is 192 kHzKiloHertz (kHz) 10^3 Hz wide, about 10 seconds long and contains this signal as well as others.
USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) sample with narrow (3 kHzKiloHertz (kHz) 10^3 Hz) bandwidth, covers only two tones:
NFMNarrowband Frequency Modulation sample, covers the entire signal:
Raw 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. sample, complete transmission with some interfering signals, 48 kHzKiloHertz (kHz) 10^3 Hz wide:
File:Unknown MFSK-17 or FHSS raw 2.zip
Frequencies[edit]
USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) tuning frequency is about 13361 kHzKiloHertz (kHz) 10^3 Hz, center frequency of the signal is 13380 kHzKiloHertz (kHz) 10^3 Hz. It's not known if this signal is transmitted on other frequencies.
Video Examples[edit]
Additional Links[edit]
Additional Images[edit]
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