4 Port Bi-Directional Cable TV HDTV Digital Amplifier Internet Signal Booster with Bypass Port and Passive Return Provides 4 amplified output ports plus a modem bypass port. The modem bypass port is not required to be used, so the amplifier can be used for standard OTA antenna connections also. This is a less costly alternative to the PCT-MA2-4P. Increases signal by +5dB on each port - approximately 3x boost! Each port on the amplifier will be boosted by 3dB above the signal on the input. This allows you to connect longer cable runs and keep the signal strong. Will reduce cable pixilation and graininess due to low signal levels. Typical low signal problems cause audio dropouts and pixilation. Boosting the signal before splitting (as this product does) often fixes signal issues. 6 kV surge protection for lightning strikes. Gold-plated, beryllium copper construction, and powder coated housing deters corrosion. Can be mounted flat or at a 90 degree angle with built-in dual mounts. 12-15v Power supply included. Coaxial cables are not included. This product is not recommended for use with amplified antennas. Using an amplified antenna with a secondary PCT amplifier may not improve your reception. THIS PRODUCT IS NOT INTENDED FOR SATELLITE TV. CONNECTING TO SATELLITE DISH WILL BLOCK THE SIGNAL and potentially damage the amplifier.