The WTA 170-260 | 4700063 from Radiometer Physics GmbH is a Waveguide Attenuator with Frequency 170 to 260 GHz, Average Power 0.1 W, Attenuation 0 to 40 dB, Insertion Loss 0.4 dB. Tags: Calibrated Attenuator. More details for WTA 170-260 | 4700063 can be seen below.