The RKT1G18A11 from RF-Lambda is a RF Variable Attenuator with Frequency DC to 18 GHz, Attenuation Range 11 dB, Attenuation Step 1 dB, Attenuation Accuracy ±1 dB, Power 1 W. Tags: Module with Connectors, Rotary, Programmable. More details for RKT1G18A11 can be seen below.