The TC-20400-10K from Talent Microwave Inc is a Directional Coupler with Frequency 1 to 40 GHz, Coupling 10 dB, Coupling Variation ±1.0 dB, Directivity 10 to 12 dB, Average Power 50 W. Tags: Module with Connectors. More details for TC-20400-10K can be seen below.