The CGN-30-1.8G from Crane Aerospace & Electronics is a Dual Directional Coupler with Coupling 30 dB, Coupling Variation ±1 dB, Frequency 1800 to 1900 MHz, Peak Power 10 kW, Average Power 350 W. Tags: Module with Connectors. More details for CGN-30-1.8G can be seen below.