The PCD-900-930-R5NS40 from Preferred Power Products (P3) is a Dual Directional Coupler with Coupling 40 dB, Coupling Variation ±0.2 dB, Frequency 900 to 930 MHz, Average Power 500 W, Insertion Loss 0.2 dB. Tags: Module with Connectors. More details for PCD-900-930-R5NS40 can be seen below.