The ZGBDC20-33HPD+ from Mini Circuits is a Bi-Directional Coupler with Frequency 300 MHz to 3 GHz, Coupling 20 to 22 dB, Average Power 16250 W, Power 160 to 250 W, Insertion Loss 0.08 to 0.35 dB. Tags: Module with Connectors. More details for ZGBDC20-33HPD+ can be seen below.