The 9804-20 from ARRA Inc. is a RF Variable Attenuator with Frequency 8 to 18 GHz, Attenuation Range 20 dB, Power 5 W, Peak Power 64.77 dBm, Insertion Loss 1 dB. Tags: Module with Connectors, Rotary, Continuously Variable. More details for 9804-20 can be seen below.