The DCE40S-0.6-3-500 from ESJ Technology is a Directional Coupler with Frequency 0.6 to 3 GHz, Coupling 40 dB, Coupling Variation ±1 dB, Directivity 16 dB, Average Power 500 W. Tags: Module with Connectors. More details for DCE40S-0.6-3-500 can be seen below.