The SO-T-1020-10 from A-Info is a Dual Directional Coupler with Coupling 10 dB, Coupling Variation ±1.2 dB, Frequency 1 to 2 GHz, Average Power 200 W, Insertion Loss 1.6 dB. Tags: Module with Connectors. More details for SO-T-1020-10 can be seen below.