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This is a 2.5W RF termination manufactured by Bird Electronic Corp. in Cleveland, Ohio, USA. It operates in the frequency range of 60 to 80 MHz and has a part number of 0B0-2. It’s used in RF systems to absorb RF energy, preventing unwanted reflections, and is typically used for testing or terminating unused ports in RF equipment. The arrow indicates the direction of power flow into the termination.