The MDC10-004040 from Microot Microwave is a Directional Coupler with Frequency 400 MHz to 4 GHz, Coupling 10 ± 0.7 dB, Coupling Variation ± 0.7 dB, Directivity 15 dB, Power 20 W. Tags: Module with Connectors. More details for MDC10-004040 can be seen below.