The QDA-1000-2000-47.5-0.5 from Qualwave is a RF Variable Attenuator with Frequency 1 to 2 GHz, Attenuation Range 0 to 47.5 dB, Attenuation Accuracy 1.425 dB ( 3% ), Power 0.5 W, Insertion Loss 3.5 dB. Tags: Module with Connectors, Digital. More details for QDA-1000-2000-47.5-0.5 can be seen below.