Agilent/HP / Power Sensor / 8481B 25 Watt sensors, 1 mW to 25 W (0 dBm to +44 dBm) Frequency range: 10 MHz to 18 GHz Maximum power: 0°C to 350°C: 30W avg, 0.01 to 5.8 GHz: 500W pk 5.8 to 18 GHz: 125 W pk Type - N (m)