The QDA-0-18000-11-1 from Qualwave is a RF Variable Attenuator with Frequency DC to 18 GHz, Attenuation Range 0 to 11 dB, Attenuation Accuracy ±0.8 to ±1 dB, Power 1 W, Insertion Loss 0.6 + 0.09/GHz. Tags: Module with Connectors, Digital. More details for QDA-0-18000-11-1 can be seen below.