The RFWA28E0F from RF-Lambda is a Waveguide to Coax Adapter with Frequency 26.5 to 40 GHz, Power 50 W, Insertion Loss 0.15 to 0.20 dB, Operating Temperature -45 to 85 Degree C, Storage Temperature -55 to 125 Degree C. More details for RFWA28E0F can be seen below.