The CSM-6-17.82G SQ from Crane Aerospace & Electronics is a Directional Coupler with Frequency 17300 to 18400 MHz, Coupling 6 dB, Coupling Variation ±0.5 dB, Directivity 18 dB, Average Power 1 W. Tags: Module with Connectors. More details for CSM-6-17.82G SQ can be seen below.