The PCD-800-950-NS40 from Preferred Power Products (P3) is a Dual Directional Coupler with Coupling 40 dB ±1 dB, Frequency 800 to 950 MHz, Average Power 500 W, Insertion Loss 0.2 dB, Directivity 24 dB. Tags: Module with Connectors. More details for PCD-800-950-NS40 can be seen below.