HC-ARQ

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HC-ARQAutomatic Repeat reQuestAutomatic Repeat Query
HC-ARQ.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 300 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).0.3 kHzKiloHertz (kHz) 10^3 Hz
3.0e-4 MHzMegaHertz (MHz) 10^6 Hz
0.3 kHzKiloHertz (kHz) 10^3 Hz
3.0e-4 MHzMegaHertz (MHz) 10^6 Hz
0.3 kHzKiloHertz (kHz) 10^3 Hz
3.0e-4 MHzMegaHertz (MHz) 10^6 Hz
Location Worldwide
Short Description Haegelin Crypto ARQAutomatic Repeat reQuestAutomatic Repeat Query (HC-ARQAutomatic Repeat reQuestAutomatic Repeat Query) was an FSKFrequency-Shift Keying synchronous simplex ARQAutomatic Repeat reQuestAutomatic Repeat Query system used by the UN and International Rescue Committee. This mode has been phased out and is no longer in use.
I/Q Raw Recording
Audio Sample
Haegelin Crypto ARQAutomatic Repeat reQuestAutomatic Repeat Query (HC-ARQAutomatic Repeat reQuestAutomatic Repeat Query) was an FSKFrequency-Shift Keying synchronous simplex ARQAutomatic Repeat reQuestAutomatic Repeat Query system used by the UN and International Rescue Committee. This mode has been phased out and is no longer in use. HC-ARQAutomatic Repeat reQuestAutomatic Repeat Query Operates at 240 BaudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.. The FSKFrequency-Shift Keying modulation has a 200Hz shift. Uses the ITA-2 Alphabet.


Samples[edit]

Sample 1:

Sample 2:

Sample 3:

Decoders[edit]

Professional Equipment/Software
  • Hoka Code 300-32
  • Wavecom W-Code
  • Wavecom W-Specta

Additional Links[edit]

Additional Images[edit]