The 2CNX101-40 from Werbel Microwave is a Dual Directional Coupler with Coupling 40 dB, Coupling Variation ±1.50 dB, Frequency 100 MHz to 1 GHz, Average Power 200 W, Insertion Loss 0.3 dB. Tags: Module with Connectors. More details for 2CNX101-40 can be seen below.