The RFDAT0418G8A from RF-Lambda is a RF Variable Attenuator with Frequency 4 to 18 GHz, Attenuation Range 127.5 dB, Attenuation Step 0.5 dB, Attenuation Accuracy 1.0 dB, Power 1 W. Tags: Module with Connectors, Programmable, Digital, Computer Controlled. More details for RFDAT0418G8A can be seen below.