SK01

Enigma2000 ID: SK01

Status: Inactive. Ran from 2006 to 2013.

Voice: None

Emission Mode: AM

Location: Havanna, Cuba

Counterparts: V02a, M08a

(c) Priyom

Operator: DGI (Cuban Intelligence Directorate)

Latest transfer method: RDFT (Redundant Digital File Transfer)

Files Transferred: .txt documents with encrypted binary data

Transmission Duration: 1 hour, file transferred exactly every 5 minutes. In between blank carrier.

More information (c) Priyom:

Prior to adoption of RDFT, the modes previously used by SK01 were BPSK31, QPSK31 and BPSK220F. In early 2007, the format was:[1]

  1. 11111 followed by a space and the current date in format DD/MM/YYYY (repeat all thrice)
  2. 5-digit message header repeated five times, then 150 5-digit groups
  3. “+ + +”
  4. 22222 followed by a space and the current date in format DD/MM/YYYY (repeat all thrice)
  5. 5-digit message header repeated five times, then 150 5-digit groups (both different than the previous message)
  6. “+ + +”
  7. 33333 followed by a space and the current date in format DD/MM/YYYY (repeat all thrice)
  8. 5-digit message header repeated five times, then 150 5-digit groups (both different than the previous messages)
  9. “+ + +”

In mid-2007, the format changed to the following:[2]

  1. 11111 followed by a space repeated 10 times
  2. 5-digit message header repeated 10 times
  3. 150 5-digit groups
  4. 22222 followed by a space repeated 10 times
  5. Repeat all of the above thrice, but with different headers and messages

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