The RFWA28A0COBS from RF-Lambda is a Waveguide to Coax Adapter with Frequency 26.5 to 40 GHz, Power 50 W, Insertion Loss 0.5 dB, Operating Temperature -40 to 85 Degree C, Storage Temperature -50 to 105 Degree C. More details for RFWA28A0COBS can be seen below.