The PCD-800-1600-R5N40 from Preferred Power Products (P3) is a Dual Directional Coupler with Coupling 40 dB, Coupling Variation ±1.5 dB, Frequency 800 MHz to 1.6 GHz, Average Power 500 W, Insertion Loss 0.2 dB. Tags: Module with Connectors. More details for PCD-800-1600-R5N40 can be seen below.