The 601-0056 Point of Interface is built for telecom operators, system integrators and network contractors requiring a dependable UHF TETRA repeater interface. This passive POI supports DL 457–458 MHz and UL 467–468 MHz operation and combines band-selective duplexing, 10 dB coupling and adjustable signal attenuation inside a 19-inch 2U rack chassis. By separating uplink and downlink paths while allowing front-panel attenuation control, it helps simplify RF balancing during in-building wireless, DAS, tunnel, campus and public safety radio deployments. The design includes a 450 MHz band-pass duplexer, fixed 20 dB / 5 W downlink attenuation and 0–20 dB adjustable UL/DL attenuation, with nominal 50-ohm RF connectivity. For search users comparing UHF POI equipment, TETRA DAS interfaces, repeater POI modules or passive RF networking components, this provides a practical, professional-grade interface for controlled wireless system integration and network optimization where stable coverage and manageable RF levels are project priorities for operators.