The Alcad AL-400 is a single-channel amplifier designed for use with terrestrial television signals. It is used to amplify weak TV signals and distribute them to multiple TV sets. The AL-400 is a compact and versatile device that is easy to install and provides reliable performance. Some of its key features include: Frequency Range: The AL-400 is designed to operate in the VHF and UHF frequency bands, making it compatible with a wide range of terrestrial TV signals. Gain Control: The amplifier features a gain control that allows you to adjust the signal strength to optimize performance. Low Noise Figure: The AL-400 has a low noise figure, which means it can reduce noise and interference in the signal, resulting in better picture and sound quality. Compact Size: The AL-400 is a compact device that can be easily installed in small spaces, making it ideal for use in apartments, hotels, and other buildings where space is limited. Easy Installation: The AL-400 is designed for easy installation, with a standard F connector input and output that can be connected to most TV sets. Overall, the Alcad AL-400 is a reliable and versatile amplifier for terrestrial TV signals, providing high-quality reception and distribution to multiple TV sets.