FEC-A

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FECForward Error Correction-A
FEC-A 96 Bd 400 Hz.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 FSKFrequency-Shift Keying
ACFAutoCorrelation Function
Bandwidth 100 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).0.1 kHzKiloHertz (kHz) 10^3 Hz
1.0e-4 MHzMegaHertz (MHz) 10^6 Hz
,1.2 kHzKiloHertz (kHz) 10^3 Hz1,200 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
0.0012 MHzMegaHertz (MHz) 10^6 Hz
0.1 kHzKiloHertz (kHz) 10^3 Hz
1.0e-4 MHzMegaHertz (MHz) 10^6 Hz
1.2 kHzKiloHertz (kHz) 10^3 Hz
0.0012 MHzMegaHertz (MHz) 10^6 Hz
Location Worldwide
Short Description FECForward Error Correction-A, also known as FECForward Error Correction-100 or FECForward Error Correction-100A, is a synchronous simplex ARQAutomatic Repeat reQuestAutomatic Repeat Query system that uses the ITA 2 alphabet. This mode was once used by many embassies, diplomatic services, and news agencies worldwide. This mode was developed by Siemens.
I/Q Raw Recording
Audio Sample
FECForward Error Correction-A, also known as FECForward Error Correction-100 or FECForward Error Correction-100A, is a synchronous simplex ARQAutomatic Repeat reQuestAutomatic Repeat Query system that uses the ITA 2 alphabet. This mode was once used by many embassies, diplomatic services, and news agencies, including Turkish, German, French, Nigerian, and Serbian. This mode was developed by Siemens.

Users that have used FECForward Error Correction-A:

  • Turkish and German Press
  • French (P6z) Diplo Services
  • Serbian (DFZG) Diplo Services
  • Turkish (TAD) Diplo Services


FECForward Error Correction-A has shifts of 85 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz)., 200 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz)., 400 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz)., and 850 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).. FECForward Error Correction-A has speeds of 96 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second., 144 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second., 192 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second., and 288 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.. It was once reported that MFA Paris and French Embassy in Romania used a 2x192 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. speed of 384 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second..

FECForward Error Correction-A uses a convolutional error correction scheme based on data bits being read into a shift register, the length of which may be changed. Values of 72 and 128 bits are common.


Samples[edit]

144 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. 850 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).

FEC-A 850 144 bd.jpg
96 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. 400 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). 144 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. 400 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). 192 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. 400 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
FEC-A 96 Bd 400 Hz.jpg
FEC-A 144 Bd 400 Hz.jpg
FEC-A 192 Bd 400 Hz.jpg
144 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. 400 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
Idle
192 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. 400 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
Idle
FEC-A 144Bd idle 400.jpg
FEC-A 192 Bd Idle 400 hz.jpg

Video Examples[edit]


Decoding Software[edit]

Hobby Level Software


Professional Equipment/Software

Additional Links[edit]

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