The OH-T-0255-11 from A-Info is a Directional Coupler with Frequency 0.025 to 0.5 GHz, Coupling 11 dB, Coupling Variation ±0.5 dB, Directivity 15 dB, Insertion Loss 1.2 dB. Tags: Module with Connectors. More details for OH-T-0255-11 can be seen below.