The CD-2-15000-18000-40-30-120-TF-TM-SF / 001639 from DETI Microwave is a Dual Directional Coupler with Coupling 40 dB, Coupling Variation ±1 dB(Coupling value tolerance), Frequency 15 to 18 GHz, Peak Power 0.4 kW, Average Power 120 W. Tags: Module with Connectors. More details for CD-2-15000-18000-40-30-120-TF-TM-SF / 001639 can be seen below.