The RKT2G4A90 from RF-Lambda is a RF Variable Attenuator with Frequency DC to 4.3 GHz, Attenuation Range 90 dB, Attenuation Step 1 dB, Attenuation Accuracy ±2 dB, Power 2 W. Tags: Module with Connectors, Rotary, Continuously Variable. More details for RKT2G4A90 can be seen below.