The 5684-50F from ARRA Inc. is a RF Variable Attenuator with Frequency 4 to 4.5 GHz, Attenuation Range 50 dB, Power 10 W, Peak Power 66.99 dBm, Insertion Loss 1.25 dB. Tags: Module with Connectors, Rotary, Continuously Variable. More details for 5684-50F can be seen below.