The RFWA42E9COCO from RF-Lambda is a Waveguide to Coax Adapter with Frequency 17.6 to 26.7 GHz, Power 10 W, Insertion Loss 0.3 dB, Operating Temperature -40 to 85 Degree C, Storage Temperature -50 to 105 Degree C. More details for RFWA42E9COCO can be seen below.