The TDC-10400-10K from Talent Microwave Inc is a Dual Directional Coupler with Coupling 10 dB, Coupling Variation ±1.8 dB, Frequency 1 to 40 GHz, Average Power 30 W, Insertion Loss 3.2 to 3.4 dB. Tags: Module with Connectors. More details for TDC-10400-10K can be seen below.