The ZBDC40-1450W+ from Mini Circuits is a Bi-Directional Coupler with Frequency 550 MHz to 1.45 GHz, Coupling 38.79 to 41.09 dB, Average Power 50 W, Power 0 to 50 W, Insertion Loss 0.08 to 0.14 dB. Tags: Module with Connectors. More details for ZBDC40-1450W+ can be seen below.