The MDP-50 from Microwave Devices Inc. is a Directional Coupler with Frequency 1.8 to 2 GHz, Coupling 50 dB, Coupling Variation ±1.0 dB, Amplitude Flatness ±0.5 dB, Directivity 20 to 25 dB. Tags: Module with Connectors. More details for MDP-50 can be seen below.