QSLs from Air & Space 

RK-02 (Iskra-2) was a small Soviet amateur radio communications satellite associated with the Iskra satellite program. Built by students and radio amateurs at the Ordzhonikidze Aviation Institute, the 28-kg satellite carried a transponder and telemetry beacon for experimental ham-radio communication between operators in the Soviet Union and other Eastern Bloc countries. Launched in April 1982 and deployed from the Salyut-7 space station by cosmonauts, the satellite orbited at a low altitude and transmitted in the 21- and 28-MHz amateur bands. Because of its low orbit it remained operational only briefly.