The QSA26B from Qualwave is a RF Variable Attenuator with Frequency DC to 26.5 GHz, Attenuation Range 0 to 70 dB, Attenuation Accuracy 1 to 1.5 dB, Power 2 to 25 W, Peak Power 0.2 kW. Tags: Module with Connectors, Rotary. More details for QSA26B can be seen below.