The ZNDC-23-2G+ from Mini Circuits is a Directional Coupler with Frequency 800 MHz to 2 GHz, Coupling 20.79 to 23.52 dB, Directivity 18.29 to 34.03 dB, Power 3 W, Average Power 3 W. Tags: Module with Connectors. More details for ZNDC-23-2G+ can be seen below.