Unknown 7p624 multi-tone data mode resembles CIS modes

Unknown 7p624 multi-tone data mode resembles CIS modes

Frequencies	6.1615 MHz,6.262 MHz,7.6245 MHz,7.667 MHz,8.568 MHz
Frequency Range	6.1615 MHz - 8.568 MHz
Mode	USB
Modulation	OFDM
ACF	—
Bandwidth	3 kHz
Location	Worldwide
Short Description	Unknown data mode with multiple tones, likely Russian.
I/Q Raw Recording	Download file
Audio Sample

This is a data mode that resembles Russian modes such as CIS-12 and the CIS-45, CIS-60 and CIS-93 modes but sounds slightly different. This is likely related to those modes, or could even be one of them or a variant of them.

Bandwidth of this signal is about 3 kHzKiloHertz (kHz) 10^3 Hz and there may be a pilot tone at 3300 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). like there is in many "CISCommonwealth of Independent States (CIS), the former Soviet Republic" modes. This signal seems to consist of tones, but counting them is somewhat difficult.

Samples

Variant or possibly idling:

Frequencies

This signal has been observed on the following frequencies at least:

• 6161.5 kHzKiloHertz (kHz) 10^3 Hz (49m broadcast band)
  
• 6262 kHzKiloHertz (kHz) 10^3 Hz (CISCommonwealth of Independent States (CIS), the former Soviet Republic-12 also spotted on this frequency)
  
• 7624.5 kHzKiloHertz (kHz) 10^3 Hz
  
• 7667 kHzKiloHertz (kHz) 10^3 Hz
  
• 8568 kHzKiloHertz (kHz) 10^3 Hz
  
• 4598 kHzKiloHertz (kHz) 10^3 Hz
  

  Video Examples

Additional Images

Transmission stops and continues Sometimes transmissions are shorter