The HMC12-387-83.5-5.0 from HXI is a Waveguide Circulator that operates from 81 to 86 GHz. It has an insertion loss of less than 0.9 dB and provides isolation of over 15 dB. The circulator can handle up to 0.5 W of power and has a VSWR of less than 1.50:1. This device has been designed for the matching and protection of E-band radio, radar, and testing systems. It has a WR-12 waveguide size and UG-387 flange.