The WTA 60-90 | 4700052 from Radiometer Physics GmbH is a Waveguide Attenuator with Frequency 60 to 90 GHz, Average Power 0.1 W, Attenuation 0 to 40 dB, Insertion Loss 0.13 dB. Tags: Calibrated Attenuator. More details for WTA 60-90 | 4700052 can be seen below.