The ZNDC-20-2G+ from Mini Circuits is a Directional Coupler with Frequency 800 MHz to 2 GHz, Coupling 19.73 to 20.11 dB, Directivity 21.74 to 28.44 dB, Power 3 W, Average Power 3 W. Tags: Module with Connectors. More details for ZNDC-20-2G+ can be seen below.