The Johansson 6557A is a programmable active combiner for SMATV and individual coaxial distribution installations. It accepts four UHF antenna inputs and actively combines them across six programmable UHF output clusters, enabling precise channel allocation and level management within a single coaxial cable network. The unit mounts near the antenna and is configured remotely via PC over the coaxial cable.

The 6557A is the higher-capacity variant in the Johansson 65xx combiner series, offering more input and cluster flexibility than the 6555A. It integrates seamlessly with other Johansson 65xx components such as the 6520 channel processor, 6554 PC-to-coax module, and 6565 control unit.

Key Features

• 4 × UHF inputs with 6 programmable UHF output clusters
• Active combining with independent gain and channel control per cluster
• Remote programming via PC over coaxial cable (using Johansson 6554 interface)
• Suitable for outdoor near-antenna mounting
• Compatible with the full Johansson 65xx modular headend ecosystem

Product Benefits

• Higher cluster count than the 6555A — ideal for larger SMATV installations
• Eliminates passive combining losses with active signal amplification
• Single coaxial cable carries both the TV signal and programming data
• Scalable and stackable within the 65xx system
• Professional-grade reliability for demanding distribution networks

Technical Specifications

• Inputs: 4 × UHF
• Output Clusters: 6 × UHF programmable clusters
• Programming: Via PC over coaxial cable (requires Johansson 6554 module)
• Compatible Platform: Johansson 65xx headend series
• Mounting: Outdoor (near-antenna installation)

Why You'll Love It

Swedish engineering for demanding professional TV distribution installations — more inputs, more clusters, and the same reliable programmable active combining that the Johansson 65xx platform is known for.