The DC0900U05 from Yantel Corporation is a Directional Coupler with Frequency 830 to 930 MHz, Coupling 4.5 to 4.8 dB, Directivity 24.9 to 25.3 dB, Average Power 5 W, Insertion Loss 0.25 dB. Tags: Surface Mount. More details for DC0900U05 can be seen below.