The TDC-20180-6S from Talent Microwave Inc is a Dual Directional Coupler with Coupling 6 dB, Coupling Variation ±1 dB, Frequency 2 to 18 GHz, Average Power 30 W, Insertion Loss 1.3 to 1.8 dB. Tags: Module with Connectors. More details for TDC-20180-6S can be seen below.