Bi-Directional Amplification - Provides signal amplification in both the forward and return paths The FRA was designed for applications such as cable modems and two-way set-top boxes With the capability to endure multiple high power surges, the FRA can operate in the harshest environments 6 kV Surge Withstand on all Ports - Unique, non arc gap surge protection design, to provide maximum protection while eliminating high impulse noise, which can be caused during an arc gap discharge. Not for Satellite Use