The AF077J-20-ITI from Impulse Technologies is a RF Variable Attenuator with Frequency 17 to 18.6 GHz, Attenuation Range 20 dB, Frequency Sensitivity ±1.0 dB over frequency range, Power 5 W, Peak Power 3 kW. Tags: Module with Connectors, Continuously Variable, Rotary. More details for AF077J-20-ITI can be seen below.