YB8020 series indoor user amplifier's key components adopt imported high-grade material. It used for compensate TV signal because of circuit loss and suitable for MMDS, final-class of CATV network or in home less than 10 TV sets. The machine adopts imported low-noise amplifier and it also can use for single-channel or multi-channel antenna amplifier or public antenna system.

3.1 Before use the amplifier, test input level whether at the range of input level. You should adjust input level into it.
3.2 Output level can't be too high. Just keep every TV set level at 60~75 dB¦ÌV. Turning ATT knob to adjust output level.
3.3 When in thunder, to avoid lightning strike, you'd better turn off power supply. The amplifier used indoor only and avoid be affected with damp or high temperature.
3.4 Keep power supply voltage at common range. Too low voltage will cause figure quality bad.