The QDA-35000-40000-60-0.5 from Qualwave is a RF Variable Attenuator with Frequency 35 to 40 GHz, Attenuation Range 0 to 60 dB, Power 0.03 W, Insertion Loss 15 dB, Supply Voltage ±5 V. Tags: Module with Connectors, Digital. More details for QDA-35000-40000-60-0.5 can be seen below.