The PCD-400-1000-1KN40 from Preferred Power Products (P3) is a Dual Directional Coupler with Coupling 40 dB, Coupling Variation ±1 dB, Frequency 400 MHz to 1 GHz, Average Power 1 kW, Insertion Loss 0.2 dB. Tags: Module with Connectors. More details for PCD-400-1000-1KN40 can be seen below.