The QDA-8000-12000-31.5-0.5 from Qualwave is a RF Variable Attenuator with Frequency 8 to 12 GHz, Attenuation Range 0 to 31.5 dB, Attenuation Accuracy ±0.5 to ±0.8 dB, Power 0.31 W, Insertion Loss 4.7 dB. Tags: Module with Connectors, Digital. More details for QDA-8000-12000-31.5-0.5 can be seen below.