The QDA-4000-32000-63.5-0.5 from Qualwave is a RF Variable Attenuator with Frequency 4 to 32 GHz, Attenuation Range 0 to 63.5 dB, Attenuation Accuracy ±2 dB, Power 0.31 W, Insertion Loss 10 dB. Tags: Module with Connectors, Digital. More details for QDA-4000-32000-63.5-0.5 can be seen below.