Description Combining and splitting architectures are becoming far too complex to rely on passive product alone to accomplish the isolation and amplification requirements to support the advanced HFC network designs for new targeted and narrowcast services. The new family of Series 9900 RF Signal Manager introduces a family of special purpose amplifiers that fill a missing niche in today’s isolation and amplification requirements. The RF Signal Manager Active family is a low-cost, highquality solution to isolation and gain requirements for new design HFC networks. The active products mount easily in the RF Signal Manager chassis, so platform advantages such as mounting density and cable management are retained.