The RDC-20-232-75X+ from Mini Circuits is a Directional Coupler with Frequency 5 to 2350 MHz, Coupling 20.2 to 21 dB, Coupling Variation ±1.3 to 1.5 dB, Directivity 7 to 22 dB, Average Power 1 W. Tags: Surface mount. More details for RDC-20-232-75X+ can be seen below.