The ADC-15-4-75+ from Mini Circuits is a Directional Coupler with Frequency 5 MHz to 1 GHz, Coupling 15.39 to 15.48 dB, Directivity 14.64 to 23.89 dB, Power 1 W, Average Power 1 W. Tags: Surface Mount. More details for ADC-15-4-75+ can be seen below.