The CMCV0590 from Custom Microwave Components is a RF Variable Attenuator with Frequency 4 to 15 GHz, Attenuation Range 12 to 27 dB, Power 3.98 W, Insertion Loss 0.4 to 0.8 dB, Operating Temperature 0 to 85 Degree C. Tags: Module with Connectors, Continuously Variable. More details for CMCV0590 can be seen below.