The F9684-40 from ARRA Inc. is a RF Variable Attenuator with Frequency 15.7 to 16.2 GHz, Attenuation Range 40 dB, Power 10 W, Peak Power 66.99 dBm, Insertion Loss 0.5 dB. Tags: Module with Connectors, Rotary, Continuously Variable. More details for F9684-40 can be seen below.