The CSC-8-3.8G SQ from Crane Aerospace & Electronics is a Directional Coupler with Frequency 3400 to 4200 MHz, Coupling 8.5 dB, Coupling Variation ±0.5 dB, Frequency Sensitivity ±0.15 dB, Directivity 18 dB. Tags: Module with Connectors. More details for CSC-8-3.8G SQ can be seen below.