SYSTEM FOR RADIOTELEPHONE MESSAGES ON MOTORWAYS Russian patent published in 2012 - IPC G08B25/12 B61L29/22 B60Q9/00 

FIELD: information technologies.

SUBSTANCE: system comprises a solar battery (1), optical concentrators (2), planks (3), photodiodes (4), reflectors (5), selsyns (6), a semispherical cap (7), a tight box (8), microphones (9), a call button (10), a pin transceiving antenna (11), a separating barrier (12). Besides, the system comprises a microprocessor, a high frequency generator, a multi-tap delay line, phase inverters, a summator, a telegraph key, a power amplifier, a transmitting antenna, the first radio transmitter, a duplexer, a heterodyne, two mixers, two amplifiers of intermediate frequency, four delay lines, four phase detectors, four memory units, four comparison units, two actuating units, a signal panel, a sound alarm, a light alarm, a radio receiver, five narrowband filters, three phase inverters, five summators, two band filters, two phase changers by +90°, two multipliers, four amplitude detectors, four keys, a phase changer by -90°, a logical element OR.

EFFECT: invention provides for higher reliability of radiotelephone messages transfer due to expansion of a range of working frequencies without expansion of a range of frequency tuning of a heterodyne, by usage of mirror and combination channels.

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