The QDA-8000-12000-31-1 from Qualwave is a RF Variable Attenuator with Frequency 8 to 12 GHz, Attenuation Range 0 to 31 dB, Attenuation Accuracy 0 to 0.62 dB (±2 %), Power 0.5 W, Insertion Loss 3.5 dB. Tags: Module with Connectors, Digital. More details for QDA-8000-12000-31-1 can be seen below.