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  • Electric signal amplifiers designed for simultaneous amplification of video (typically in the VHF and/or UHF bands) and audio signals (typically in a range from a few hundred hertz to 20 kHz). These devices typically consist of a wide-band, high-fidelity, electronic amplifier with audio and video signal inputs, electronic circuits to amplify the signal for both the audio and video channels, controls (e.g., gain, contrast), appropriate output ports for the amplified signals, and a power supply. Video/audio amplifiers are used mainly in hospital information and communication systems to compensate for transmission losses in remote cable connections throughout the facility.
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