The 180DRWCA1.85-74_Cu from A-Info is a Waveguide to Coax Adapter with Frequency 18 to 55 GHz, Power 5 W, Peak Power 0.01 kW, Insertion Loss 0.6 to 0.75 dB, Operating Temperature -55 to 85 Degree C. Tags: Double Ridge. More details for 180DRWCA1.85-74_Cu can be seen below.