The STA-60-03-D5 from ERAVANT is a Waveguide Attenuator with Frequency 220 to 325 GHz, Average Power 0.03 to 0.08 W, Attenuation 0 to 60 dB, Insertion Loss 5.5 to 8.5 dB. Tags: Direct Reading Attenuator. More details for STA-60-03-D5 can be seen below.