The DC1100M1800B20CD10PN-01 from Dyne Tech is a Dual Directional Coupler with Coupling 20 dB, Coupling Variation ±2 dB, Frequency 0.2 to 2 GHz, Average Power 10 W, Power 10 W. Tags: Module with Connectors. More details for DC1100M1800B20CD10PN-01 can be seen below.