FIELD: video surveillance technologies.
SUBSTANCE: cable transmitter has serially connected modulator, which is meant for converting television low-frequency spectrum to radio-frequency, harmonics filter, high frequency amplifier and attenuator, and also power-feeding system filtering block, while output of cable transmitter is made with possible switching to input of ranges adding block of unified television main, formed by coaxial cable.
EFFECT: higher efficiency.
3 dwg
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