The CSM-6-3.8G SQ from Crane Aerospace & Electronics is a Directional Coupler with Frequency 3750 to 3800 MHz, Coupling 6 dB, Coupling Variation ±0.5 dB, Directivity 20 dB, Average Power 10 W. Tags: Module with Connectors. More details for CSM-6-3.8G SQ can be seen below.