Digital number stations are becoming a more popular method in sending messages. It’s more efficient than a typical voice station since it takes less time to transmit the message and receive it. Digital stations are some of the most unique ways that spy agencies send encrypted messages through shortwave radio.
Station Abbreviations
SK – Digital Mode
HM – Hybrid Mode
DP – Digital Pseudo-Polytone
XP – Polytones
F – Frequency-shift keying digital modes
P – Phase-shift keying digital modes
Active Number Stations
ENIGMA ID |
Country |
Agency |
| F01 | Russia
Poland Poland Russia Russia Russia Russia Russia Cuba |
SVR
AW AW SVR SVR SVR SVR SVR DGI |
Inactive
ENIGMA ID |
Country |
Agency |
| SK01 – RDFT | Cuba
Russia Russia Russia Russia Russia Russia Poland |
DGI
SVR SVR SVR SVR SVR SVR AW |
Method in Recreating HM01’s RDFT
X06 – Mazielka
X06 is a Russian diplomatic selective call system. Also referred to as MFSK-6. This station usually transmits before scheduled Russian numbers stations.
Unknown Stations
The purpose of these stations are not yet determined or they are just result of transmitting errors such as XM. These are not Numbers Stations
XM – The Backwards Music Station / Whales
Science and Research Programs
High Frequency Active Auroral Research Program (HAARP)
