The OH-T-1031-10 from A-Info is a Directional Coupler with Frequency 1.0 to 3.1 GHz, Coupling 10 dB, Coupling Variation ±0.75 dB, Directivity 20 dB, Insertion Loss 0.5 dB. Tags: Module with Connectors. More details for OH-T-1031-10 can be seen below.