The WFI 90-140 | 04800007 from Radiometer Physics GmbH is a Waveguide Isolator with Frequency 90 to 140 GHz, Insertion Loss 1.3 dB, Power 0.1 W (20 dBm), Isolation 20 dB. Tags: Faraday Isolator. More details for WFI 90-140 | 04800007 can be seen below.