{"product_id":"johansson-6557a-programmable-active-combiner","title":"Johansson 6557A Programmable Active Combiner – 4 UHF Inputs, 6 Clusters \u0026 PC-over-Coax","description":"\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e4 × UHF inputs with 6 programmable UHF output clusters\u003c\/li\u003e\n  \u003cli\u003eActive combining with independent gain and channel control per cluster\u003c\/li\u003e\n  \u003cli\u003eRemote programming via PC over coaxial cable (using Johansson 6554 interface)\u003c\/li\u003e\n  \u003cli\u003eSuitable for outdoor near-antenna mounting\u003c\/li\u003e\n  \u003cli\u003eCompatible with the full Johansson 65xx modular headend ecosystem\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eProduct Benefits\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eHigher cluster count than the 6555A — ideal for larger SMATV installations\u003c\/li\u003e\n  \u003cli\u003eEliminates passive combining losses with active signal amplification\u003c\/li\u003e\n  \u003cli\u003eSingle coaxial cable carries both the TV signal and programming data\u003c\/li\u003e\n  \u003cli\u003eScalable and stackable within the 65xx system\u003c\/li\u003e\n  \u003cli\u003eProfessional-grade reliability for demanding distribution networks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInputs:\u003c\/strong\u003e 4 × UHF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Clusters:\u003c\/strong\u003e 6 × UHF programmable clusters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProgramming:\u003c\/strong\u003e Via PC over coaxial cable (requires Johansson 6554 module)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Platform:\u003c\/strong\u003e Johansson 65xx headend series\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Outdoor (near-antenna installation)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eWhy You'll Love It\u003c\/h4\u003e\n\u003cp\u003eSwedish 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.\u003c\/p\u003e","brand":"Johansson","offers":[{"title":"Default Title","offer_id":56564407697790,"sku":"203154","price":157.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0961\/2250\/3550\/files\/15671610442110.webp?v=1779629990","url":"https:\/\/lynk.gr\/en-gb\/products\/johansson-6557a-programmable-active-combiner","provider":"Lynk.gr","version":"1.0","type":"link"}