Portable UHF radio communication equipment.
Used by the Soviet military, the Warsaw Pact countries, and the Arab countries from the late 1960s until the 1980s, designated R-809M.
Frequency range: 100 to 149.975 MHz; 2,000 channels in 25 kHz steps; AM (Amplitude Modulation); output power: 0.5 Watts.
Transistors technology, vacuum tubes in transmitter final stages.