Soviet Strela satellites

Soviet Strela (an "arrow") satellites were designed for the so-called "store-and-dump" communications. The spacecraft records a message as it overflies a sender and downlinks the message when the satellite is in range of the receiving antennas of an addressee. Strela served Soviet security and military intelligence services -- KGB and the army intelligence known as GRU. In the 1980s, the Soviet government deployed a "civilian" version of the spacecraft named Gonets ("messenger"). 

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Russian Space Web

Gunter's Space Page