The RFWAD580A9CFAL from RF-Lambda is a Waveguide to Coax Adapter with Frequency 5.8 to 16 GHz, Power 350 W, Insertion Loss 0.2 to 0.8 dB, Operating Temperature -40 to 85 Degree C, Storage Temperature -50 to 125 Degree C. More details for RFWAD580A9CFAL can be seen below.