Corrective amplifier for cable TV. Scheme, description

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Corrective amplifier for cable TV. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Antenna amplifiers

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This amplifier is designed to compensate for losses in the cable line. Its frequency response is inverse to cable attenuation. So at the end of a 150 m cable of the KVT-1M type loaded with a resistance of 75 ohms connected to the output, the frequency level is 200 MHz = +6 dB, and the frequency level is 50 MHz = +2 dB relative to the linear input voltage of the amplifier. We set the linear total frequency response to R9 for a specific cable length.

The amplifier can also be used as an antenna or brownie, for meter waves.

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Author: E.Shustikov, UO5OHX ex RO5OWG; Publication: shustikov.by.ru

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