The OH-T-180500-20 from A-Info is a Directional Coupler with Frequency 18.0 to 50.0 GHz, Coupling 20 dB, Coupling Variation ±0.50 dB, Directivity 10 dB, Insertion Loss 1.5 dB. Tags: Module with Connectors. More details for OH-T-180500-20 can be seen below.