Chinese 4+4

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Chinese 4+4
CHN 4+4.jpg
Frequencies 3 MHz,30 MHz
Frequency Range 3 MHz - 30 MHz
Mode USB
Modulation PSK
ACF
Emission Designator
Bandwidth 2.5 kHz
Location China
Short Description Chinese 4+4, also known as 4+4 or PRC 4+4, is a multi-carrier transmission mode. It used by Chinese Diplomatic services with most traffic originating from Beijing, China.
I/Q Raw Recording
Audio Sample

Chinese 4+4, also known as 4+4 or PRC 4+4, is a multi-carrier transmission mode. It used by Chinese Diplomatic services with most traffic originating from Beijing, China.

Characteristics[edit]

It consists of 8 carriers. They are 300 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). apart, except the 4th and 5th carriers, which are 450 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). apart from each other.

Samples[edit]

4+4 Idle

4+4 Traffic

Frequencies[edit]

Frequencies spotted at:

  • 4433 kHzKiloHertz (kHz) 10^3 Hz
  • 7671 kHzKiloHertz (kHz) 10^3 Hz
  • 8076 kHzKiloHertz (kHz) 10^3 Hz
  • 10314 kHzKiloHertz (kHz) 10^3 Hz
  • 10729 kHzKiloHertz (kHz) 10^3 Hz
  • 10845 kHzKiloHertz (kHz) 10^3 Hz
  • 13034 kHzKiloHertz (kHz) 10^3 Hz


Decoding Software[edit]

Professional Equipment/Software

Additional Links[edit]