The DC390M20B30C150PN-01 from Dyne Tech is a Directional Coupler with Frequency 380 to 400 MHz, Coupling 30 dB, Coupling Variation ±1 dB, Directivity 18 dB, Average Power 150 W. Tags: Module with Connectors. More details for DC390M20B30C150PN-01 can be seen below.