Do you Remember ?
  To listen: Click Play button on any of the MP3 players, below the descriptions
Soviet Woodpecker
Duga-3 station at the Chernobyl-2 site. Its very powerful signal disrupted radio communications all over the world. According to the former commander of the Chernobyl-2 site, the installation was damaged during the 1990 Chernobyl disaster, never to be heard again.These high powered over the horizon radars transmitted at very high power estimated at around 10MW. Its estimated mass is around 14,000 tons.

Elbrus Analogue T-217M
Eelbrus Analogue T-217M voice encryption system from the former East German NVA (Nationale Volksarmee). Sound sample from Der SAS- und Chiffrierdienst. For more information about East German equipment, please visit Der SAS- und Chiffr.

KGB Male
KGB Male Unidentified Russian numbers station, believed to be KGB operated.

Czechoslovakian Lady - Numbers Station
Most Spec Ops will be familiar with this type of transmission.
It was transmitted by the Czechoslovakian StB (The State Security Service)An easily recognisable signal followed by the message which was usually encrypted using the one-time-pad system.

Soviet Buzzer UVB-76
Soviet Buzzer UVB-76 transmitter, sending its monotone buzz tones for several decades. Reportedly located in Povarovo, near the village of Lozhki in Russia, the purpose of The Buzzer has never been disclosed.
It transmits an AM signal on a frequency of 4.625 MHz and has done so since 1982.

Soviet Sputnik 1
Sputnik 1 was launched from Site the Tyuratam range,in Kazakh. The satellite travelled at 29,000 kilometers (18,000 miles) per hour, taking 96.2 minutes to complete an orbit. It transmitted radio signals at 20.005 and 40.002 MHz.The signals continued for 22 days until the transmitter batteries ran out on 26 October 1957.

Attencion station
Attencion Numbers station of the Cuban intelligence service DG. These stations remain very active to this day. Several Cuban agents, receiving orders through these stations have been arrested in the United States.

Stasi Gong Station
This is one the most sinister numbers station ever, operated by the East German Stasi. The station with its very recognizable weird gong sounds transmitted nearly a decade and suddenly stopped in May 1990. For information about East German equipment, please visit Der SAS- und Chiffr

Indiscreet Jamming
Obvious jamming of one of the numerous voice number stations.

Iran Iraqi Jammer
These were widely used during the Iran Iraqi war
1980 to 1988. Picture is of much more modern equipment
the Russian Kvant 1L222 Avtobaza Elint and Jamming system.