FIELD: electric engineering. SUBSTANCE: device may be used for control of lights of runways in airports. Device switches signal lamps to required brightness automatically when aircraft starts landing. frequency decoder is introduced in ground part of device, reverse counter, device and frequency oscillator are introduced in airborne part of device. EFFECT: increased reliability, decreased usage of power, increased service life of lamps. 1 dwg, 1 tbl
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|---|---|---|---|
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|
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RU2050695C1 |
