The OH-T-180400-30 from A-Info is a Directional Coupler with Frequency 18.0 to 40.0 GHz, Coupling 30 dB, Coupling Variation ±0.70 dB, Directivity 12 dB, Insertion Loss 1 dB. Tags: Module with Connectors. More details for OH-T-180400-30 can be seen below.