The RFST300G12 from RF-Lambda is a Termination with Frequency DC to 12.4 GHz, Power 300 W, Peak Power 10 kW, Operating Temperature -40 to 85 Degree C, Storage Temperature -55 to 125 Degree C. Tags: Module with Connectors, Coaxial Termination. More details for RFST300G12 can be seen below.