The QDA-1000-20000-63.5-0.5 from Qualwave is a RF Variable Attenuator with Frequency 1 to 20 GHz, Attenuation Range 0 to 63.5 dB, Attenuation Accuracy ±1.2 to ±3 dB, Power 0.31 W, Insertion Loss 7 dB. Tags: Module with Connectors, Digital. More details for QDA-1000-20000-63.5-0.5 can be seen below.