CONTROLLER FOR HOT RADIOPHONE COMMUNICATIONS Russian patent published in 2003 - IPC

FIELD: radio telephony for repairs of railways, structures, and devices, and survival activities. SUBSTANCE: controller incorporated in hot radiophone communication set intended for organizing radio communications with subscribers in signal relaying mode and also for establishing wire communications in incoming and outgoing signal mode that may be found useful for hot supervisor communications has receiver 1, transmitter 2, control unit 6, DTMF decoder 7, call voltage detector 8, four switches K through K4, transformer, two dividers, capacitors, five amplifiers 11, 14 through 17, two RC circuits 10 (parallel and series ones), automatic gain control 12, and adder 13. Proposed controller makes it possible to rapidly set up complex communications at any point of railway while maintaining advantages of commonly used communications network. EFFECT: enhanced speed of setting up complex communications. 1 cl, 5 dwg