SK01 is a Cuban numbers station that used a digital mode called the Redundant Digital File Transfer (RDFT). This station was operated by the DGI who transmitted and received the RDFT using DIGTRX. It was first seen on December 26th, 2006.
During the first half of 2007, it was also observed using the BPSK125 and BPSK220fec modes. The RDFT mode became the sole transmission method in late 2007. SK01 is now inactive and has been replaced entirely by HM01.
SK01 Station Summary
Name: RDFT
Activity: Inactive, since 2012
Emission Mode: AM
Believed Country of Origin: Cuba
Counterpart Stations: V02a, M08a, HM01
Sources
Recording and Waterfall View by Token
ENIGMA 2000 Active Stations List V1.3
