The PCD-900-930-R8NS30 from Preferred Power Products (P3) is a Dual Directional Coupler with Coupling 30 dB, Coupling Variation ±0.2 dB, Frequency 900 to 930 MHz, Average Power 800 W, Insertion Loss 0.2 dB. Tags: Module with Connectors. More details for PCD-900-930-R8NS30 can be seen below.