Take a look what i just found at amazon:
Their description:
Product Description
PCT’s 8-Port MA2 drop amplifier has improved performance and ultra-low noise amplification of broadband signals for subscriber drop installations. The 8-Port Amplifier provides better return loss performance, enhanced shielding protection, and IEEE B3 6kV, 3000 amp combination wave surge withstand on all ports for superior lightning protection. All “F” ports also include PCT’s patented Digital Seizure Mechanism (DSM) for superior center conductor retention, electric… More >>
Go & get it here - i can recommend it:
8-Port Bi-Directional Cable TV HDTV Amplifier Splitter Signal Booster with Passive Return Path