The AT-WC-101F-E from AT Microwave is a Waveguide to Coax Adapter with Frequency 75 to 110 GHz, Power 10 W, Insertion Loss 1 to 1.3 dB, Operating Temperature -40 to 85 Degree C, Storage Temperature -55 to 125 Degree C. More details for AT-WC-101F-E can be seen below.