The ZUDC30-183+ from Mini Circuits is a Bi-Directional Coupler with Frequency 500 MHz to 18 GHz, Coupling 30 dB, Average Power 150 W, Power 10 to 50 W, Insertion Loss 0.4 to 1.55 dB. Tags: Module with Connectors. More details for ZUDC30-183+ can be seen below.