The HWCA-101F-RA from HASCO is a WR-10 Waveguide to 1 mm Coaxial Adapter that operates from 75 GHz to 110 GHz (W-band). This precision adapter has an insertion loss of less than 0.75 dB, a VSWR of up to 1.4:1. It can handle a CW power of up to 10 W. This waveguide adapter is available with a UG-387/UM flange and provides a low insertion loss and low VSWR.