The F4674-40 from ARRA Inc. is a RF Variable Attenuator with Frequency 3 to 3.7 GHz, Attenuation Range 40 dB, Attenuation Accuracy ±1 dB, Power 10 W, Peak Power 66.99 dBm. Tags: Module with Connectors, Rotary, Continuously Variable. More details for F4674-40 can be seen below.