Calibrated Keysight Agilent 8485A Thermocouple Power Sensor 50 MHz - 26.5 GHzCondition: Seller refurbished Good working condition, as pictured. Calibrated Oct 2024. From the manufacturer: Wide frequency range from 10 MHz to 26. 5 GHz Wide dynamic range from 35 to +20 dBm EEPROM to store cal factors eliminates manual entry Power linearity of less than 1%, excellent SWR of mismatch uncertainty, and highly accurate power repeatability Accurate calibration and traceability to the US National Institute of Standards and Technology