The RFWA22K9U383BS from RF-Lambda is a Waveguide to Coax Adapter with Frequency 32.9 to 50.1 GHz, Insertion Loss 0.75 to 1.5 dB, Operating Temperature -40 to 85 Degree C, Storage Temperature -50 to 125 Degree C. More details for RFWA22K9U383BS can be seen below.