Used Agilent/Keysight 8481B RF Power Sensor 18 GHz High Power Thermocouple Power Sensor

The Agilent 8481B lets you measure average RF power from 10 MHz to 18 GHz at levels up to +44 dBm, making a single probe sufficient for kW radar drivers, high-power amplifiers and Ku-band links. Its thermocouple architecture delivers true-RMS readings on any modulation without range-switch glitches, while the built-in Type-N attenuator chain and excellent SWR keep mismatch uncertainty low. EEPROM-less operation still plugs straight into modern Keysight EPM, EPM-P and P-Series meters as well as legacy 43x frames, preserving existing test code and accessories. Refurbished units ship ISO-17025-calibrated, providing Keysight accuracy, 25-W headroom and long-term serviceability at a fraction of new-sensor cost.

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TESTRO Advantages

1. Laboratory-Verified Performance – Every unit ships with an ISO/IEC 17025 calibration certificate (TESTRO Certified) tied to its serial number.

2. Full Internal Transparency – High-resolution teardown photos plus a live video test (gain-linearity, noise-floor, spurious response); recordings are stored for the product’s lifetime.

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Used Agilent/Keysight 8481B RF Power Sensor 18 GHz High Power Thermocouple Power Sensor Images