The DC0900B30 from Yantel Corporation is a Directional Coupler with Frequency 800 MHz to 1 GHz, Coupling 29.5 to 29.8 dB, Directivity 25 to 27 dB, Average Power 355 W, Insertion Loss 0.1 dB. Tags: Surface Mount. More details for DC0900B30 can be seen below.