EMERGENCY RADIO BUOY Russian patent published in 1996 - IPC

FIELD: radio engineering; data transmission and location of coordinates of vehicles or ships in distress; space rescue systems for emergency aircraft and ships. SUBSTANCE: emergency radio buoy has buoy activating signal unit 1, read-only memory unit 2, first adder 3, first and second master crystal oscillators 4 and 7, amplitude modulator 5, first and second power amplifiers 6 and 9, control voltage shaper 8, duplexer 10, antenna 11, time code shaper 12, frequency divider unit 13, parallel-to- serial code converter 14, modulating signal shaper 15, phase detector 16, second adder 17, DC amplifier 18, controllable oscillator 19, factor-of-two frequency multiplier 20, and scale-of-40 circuit 21. EFFECT: provision for automatic turning-on of radio buoy in response to emergency situation sensors with recording time moment since occurrence of accident. 1 dwg