ARQ-N

ARQ-N

Frequencies	3 MHz,30 MHz
Frequency Range	3 MHz - 30 MHz
Mode	USB
Modulation	FSK
ACF	—
Emission Designator	—
Bandwidth	85 Hz,160 Hz,170 Hz,190 Hz,340 Hz,388 Hz,400 Hz,850 Hz
Location	Worldwide
Short Description	ARQ-N is a synchronous dual channel ARQ mode identical to ARQ-E, with the only difference being that ARQ-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

• go2DECODE
• go2MONITOR
• Hoka Code 300-32
• Wavecom W-Code
• Wavecom W-Spectra
• Rohde&Schwarz CA100

Additional Links

• RadioRaft ARQ-N
• ARQ1000 Duplex info
• ARQ-E and ARQ-N Info
• shoc Database: ARQ-N
• WAVECOM Database: ARQ-N