ARQ-N

From Signal Identification Wiki
Jump to: navigation, search
ARQAutomatic Repeat reQuestAutomatic Repeat Query-N
ARQ-N.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 85Hz0.085 kHzKiloHertz (kHz) 10^3 Hz
8.5e-5 MHzMegaHertz (MHz) 10^6 Hz
,160Hz0.16 kHzKiloHertz (kHz) 10^3 Hz
1.6e-4 MHzMegaHertz (MHz) 10^6 Hz
,170Hz0.17 kHzKiloHertz (kHz) 10^3 Hz
1.7e-4 MHzMegaHertz (MHz) 10^6 Hz
,190 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).0.19 kHzKiloHertz (kHz) 10^3 Hz
1.9e-4 MHzMegaHertz (MHz) 10^6 Hz
,340 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).0.34 kHzKiloHertz (kHz) 10^3 Hz
3.4e-4 MHzMegaHertz (MHz) 10^6 Hz
,388 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).0.388 kHzKiloHertz (kHz) 10^3 Hz
3.88e-4 MHzMegaHertz (MHz) 10^6 Hz
,400 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).0.4 kHzKiloHertz (kHz) 10^3 Hz
4.0e-4 MHzMegaHertz (MHz) 10^6 Hz
,850 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).0.85 kHzKiloHertz (kHz) 10^3 Hz
8.5e-4 MHzMegaHertz (MHz) 10^6 Hz
0.085 kHzKiloHertz (kHz) 10^3 Hz
8.5e-5 MHzMegaHertz (MHz) 10^6 Hz
0.85 kHzKiloHertz (kHz) 10^3 Hz
8.5e-4 MHzMegaHertz (MHz) 10^6 Hz
Location Worldwide
Short Description ARQAutomatic Repeat reQuestAutomatic Repeat Query-N is a synchronous dual channel ARQAutomatic Repeat reQuestAutomatic Repeat Query mode identical to ARQAutomatic Repeat reQuestAutomatic Repeat Query-E, with the only difference being that ARQAutomatic Repeat reQuestAutomatic Repeat Query-N has no symbol inversions. Formerly used by Italian Diplomatic services.
I/Q Raw Recording
Audio Sample
ARQAutomatic Repeat reQuestAutomatic Repeat Query-N is a synchronous dual channel ARQAutomatic Repeat reQuestAutomatic Repeat Query mode identical to ARQAutomatic Repeat reQuestAutomatic Repeat Query-E, with the only difference being that ARQAutomatic Repeat reQuestAutomatic Repeat Query-N has no symbol inversions. Formerly used by Italian Diplomatic services. Also grouped under ARQ1000 Duplex. Uses 7-bit ITA 2-P Alphabet.

Like ARQAutomatic Repeat reQuestAutomatic Repeat Query-E and E3, this mode was invented by Siemens of Germany, and has all the features of ARQAutomatic Repeat reQuestAutomatic Repeat Query-E, with the exception of a lack of symbol inversion.The lack of inversion makes it impossible to automatically determine the length of the RQ cycle. However, known systems operate exclusively with a single RQ character and three repeated characters. This mode is most commonly heard at 96 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second., but baudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. rates of 48, 50, 64, 72, 96, 144, 184.6, 192, and 288 baudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. are possible.


Decoding Software[edit]

Professional Equipment/Software
  • Shoc go2decode
  • Shoc go2monitor
  • Hoka Code 300-32
  • Wavecom W-Code
  • Wavecom W-Spectra

Video Examples[edit]

Additional Links[edit]

Additional Images[edit]