The CSM-5-6.1G SQ from Crane Aerospace & Electronics is a Directional Coupler with Frequency 5800 to 6400 MHz, Coupling 5 dB, Coupling Variation ±0.25 dB, Frequency Sensitivity ±0.25 dB, Directivity 16 dB. Tags: Module with Connectors. More details for CSM-5-6.1G SQ can be seen below.