The PCD-20-100-R5N40 from Preferred Power Products (P3) is a Dual Directional Coupler with Coupling 40 dB, Coupling Variation ±1 dB, Frequency 20 to 100 MHz, Average Power 500 W, Insertion Loss 0.2 dB. Tags: Module with Connectors. More details for PCD-20-100-R5N40 can be seen below.