The PCD-100-2000-R1S20 from Preferred Power Products (P3) is a Dual Directional Coupler with Coupling 20 dB, Coupling Variation ±0.5 dB, Frequency 100 MHz to 2 GHz, Average Power 100 W, Insertion Loss 0.35 dB. Tags: Module with Connectors. More details for PCD-100-2000-R1S20 can be seen below.