The C2P3G3P7G20D from Lotus Communication Systems is a Directional Coupler with Frequency 2.3 to 3.7 GHz, Coupling 20 dB, Directivity 17.2 dB, Average Power 2 W, Insertion Loss 1.3 dB. Tags: Module with Connectors. More details for C2P3G3P7G20D can be seen below.