HC-ARQ

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HC-ARQ
HC-ARQ.jpg
Frequencies 3 MHz,30 MHz
Frequency Range 3 MHz - 30 MHz
Mode USB
Modulation FSK
ACF
Bandwidth 300 Hz
Location Worldwide
Short Description Haegelin Crypto ARQ (HC-ARQ) was an FSK synchronous simplex ARQ 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-Spectra

Additional Links[edit]

Additional Images[edit]