The WTA 260-400 | 4700033 from Radiometer Physics GmbH is a Waveguide Attenuator with Frequency 260 to 400 GHz, Average Power 0.1 W, Attenuation 0 to 40 dB, Insertion Loss 0.7 dB. Tags: Calibrated Attenuator. More details for WTA 260-400 | 4700033 can be seen below.