4 ports with +7db per output, connect one HDTV antenna to 4 TV in each location for reliable reception.
This improves cable modem performance in much cases, compatible with all cable TV systems.
But the reception of tv antennas and length of coaxial cables might reduce your pixelation and graininess.
Connect the cable to input the signals and output to the TV/converter box with extremely low-noise (ELN) circuitry.
Warm tips: Pls pay attention that this signal booster need power supply to work, pls make sure connecte it with power supply, thanks.