The MMCDC-0206-20 from Mesa Microwave is a Directional Coupler with Frequency 2 to 6 GHz, Coupling 20 dB, Coupling Variation ±0.5 dB, Frequency Sensitivity ±1 dB, Directivity 20 to 25 dB. Tags: Module with Connectors. More details for MMCDC-0206-20 can be seen below.