JT9

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JT9
JT9.png
Frequencies 3578 kHzKiloHertz (kHz) 10^3 Hz3,578,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
3.578 MHzMegaHertz (MHz) 10^6 Hz
,28079 kHzKiloHertz (kHz) 10^3 Hz28,079,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
28.079 MHzMegaHertz (MHz) 10^6 Hz
3,578 kHzKiloHertz (kHz) 10^3 Hz
3.578 MHzMegaHertz (MHz) 10^6 Hz
28,079 kHzKiloHertz (kHz) 10^3 Hz
28.079 MHzMegaHertz (MHz) 10^6 Hz
Frequency Range 3.578 MHzMegaHertz (MHz) 10^6 Hz3,578,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
3,578 kHzKiloHertz (kHz) 10^3 Hz
- 28.079 MHzMegaHertz (MHz) 10^6 Hz28,079,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
28,079 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 20 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).0.02 kHzKiloHertz (kHz) 10^3 Hz
2.0e-5 MHzMegaHertz (MHz) 10^6 Hz
0.02 kHzKiloHertz (kHz) 10^3 Hz
2.0e-5 MHzMegaHertz (MHz) 10^6 Hz
0.02 kHzKiloHertz (kHz) 10^3 Hz
2.0e-5 MHzMegaHertz (MHz) 10^6 Hz
Location Worldwide
Short Description JT9 is a very narrow 9-FSKFrequency-Shift Keying mode for making contact (QSO's) under extreme weak-signal conditions.
I/Q Raw Recording
Audio Sample
JT9 is a very narrow 9-FSKFrequency-Shift Keying mode for making contact (QSO's) under extreme weak-signal conditions. JT9 is about 2 dBThe decibel (dB) is a logarithmic unit used to express the ratio of two values of a physical quantity, here the strength of a received signal. more sensitive than JT65A while using less than 10% of the bandwidth.


Frequencies[edit]

  • 3578-3579 kHzKiloHertz (kHz) 10^3 Hz
  • 7078-7079 kHzKiloHertz (kHz) 10^3 Hz
  • 14078-14079 kHzKiloHertz (kHz) 10^3 Hz
  • 21078-21079 kHzKiloHertz (kHz) 10^3 Hz
  • 28078-28079 kHzKiloHertz (kHz) 10^3 Hz

Decoding Software[edit]

Hobby Level Software

Video Examples[edit]

Additional Links[edit]



Additional Images[edit]