Multi Frequency Shift Keying (MFSK)

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Multiple Frequency-Shift Keying (MFSKMultiple Frequency Shift-Keying)
MFSK 8 thmb.jpg
Frequencies 3 MHzMegaHertz (MHz) 10^6 Hz3,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
3,000 kHzKiloHertz (kHz) 10^3 Hz
,30 MHzMegaHertz (MHz) 10^6 Hz30,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
30,000 kHzKiloHertz (kHz) 10^3 Hz
3,000 kHzKiloHertz (kHz) 10^3 Hz
MHzMegaHertz (MHz) 10^6 Hz
30,000 kHzKiloHertz (kHz) 10^3 Hz
30 MHzMegaHertz (MHz) 10^6 Hz
Frequency Range MHzMegaHertz (MHz) 10^6 Hz3,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
3,000 kHzKiloHertz (kHz) 10^3 Hz
- 30 MHzMegaHertz (MHz) 10^6 Hz30,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
30,000 kHzKiloHertz (kHz) 10^3 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
ACFAutoCorrelation Function
Bandwidth 154 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).0.154 kHzKiloHertz (kHz) 10^3 Hz
1.54e-4 MHzMegaHertz (MHz) 10^6 Hz
,218 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).0.218 kHzKiloHertz (kHz) 10^3 Hz
2.18e-4 MHzMegaHertz (MHz) 10^6 Hz
,316 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).0.316 kHzKiloHertz (kHz) 10^3 Hz
3.16e-4 MHzMegaHertz (MHz) 10^6 Hz
,330 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).0.33 kHzKiloHertz (kHz) 10^3 Hz
3.3e-4 MHzMegaHertz (MHz) 10^6 Hz
,435 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).0.435 kHzKiloHertz (kHz) 10^3 Hz
4.35e-4 MHzMegaHertz (MHz) 10^6 Hz
,630 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).0.63 kHzKiloHertz (kHz) 10^3 Hz
6.3e-4 MHzMegaHertz (MHz) 10^6 Hz
0.154 kHzKiloHertz (kHz) 10^3 Hz
1.54e-4 MHzMegaHertz (MHz) 10^6 Hz
0.63 kHzKiloHertz (kHz) 10^3 Hz
6.3e-4 MHzMegaHertz (MHz) 10^6 Hz
Location Worldwide
Short Description MFSKMultiple Frequency Shift-Keying is a family of multi-frequency shift keying digital transmission modes. MFSKMultiple Frequency Shift-Keying-8 and MFSKMultiple Frequency Shift-Keying-16 are two well-known amateur radio modes.
I/Q Raw Recording
Audio Sample
MFSKMultiple Frequency Shift-Keying is a family of multi-frequency shift keying digital transmission modes. MFSKMultiple Frequency Shift-Keying-8 and MFSKMultiple Frequency Shift-Keying-16 are two well-known amateur radio modes. MFSK16 and MFSK8 were developed by Murray ZL1BPU and Nino IZ8BLY in 1999.

MFSKMultiple Frequency Shift-Keying-8 uses a set of 8 tones with the equal distance of 7.81 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz)., MFSKMultiple Frequency Shift-Keying-16 a set of 16 tones with the equal distance of 15.625 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).. The baudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. rate of MFSKMultiple Frequency Shift-Keying-8 is 7.81 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. and that of MFSKMultiple Frequency Shift-Keying-16 is 15.625 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second..


Mode Samples[edit]

MFSKMultiple Frequency Shift-Keying 4

MFSK 4.png
MFSKMultiple Frequency Shift-Keying 8

MFSK 8.jpg
MFSKMultiple Frequency Shift-Keying 11

MFSK 11.jpg
MFSKMultiple Frequency Shift-Keying 16

MFSK 16.jpg
MFSKMultiple Frequency Shift-Keying 22

MFSK 22.jpg
MFSKMultiple Frequency Shift-Keying 31

MFSK 31.jpg
MFSKMultiple Frequency Shift-Keying 32

MFSK 32.jpg
MFSKMultiple Frequency Shift-Keying 64

MFSK 64.jpg
MFSKMultiple Frequency Shift-Keying 128

MFSK 128.jpg

Frequencies[edit]

This mode is utilized during the tests run by the VoA every weekend. See the VoA RadioGram website for the schedule.


Decoding Software[edit]

Hobby Level Software

Additional Links[edit]

Additional Images[edit]