The 3MPC-40 from Microwave Devices Inc. is a Directional Coupler with Frequency 800 MHz to 3 GHz, Coupling 40 dB, Coupling Variation ±1.0 dB, Amplitude Flatness ±1.0 dB, Directivity 20 dB. Tags: Module with Connectors. More details for 3MPC-40 can be seen below.