The RFWA19V0COAL from RF-Lambda is a Waveguide to Coax Adapter with Frequency 40 to 60 GHz, Power 5 W, Insertion Loss 0.3 to 0.6 dB, Operating Temperature -40 to 85 Degree C, Storage Temperature -50 to 105 Degree C. More details for RFWA19V0COAL can be seen below.