The CSM-10-13.5G SQ from Crane Aerospace & Electronics is a Directional Coupler with Frequency 13250 to 13750 MHz, Coupling 10 dB, Coupling Variation ±1 dB, Frequency Sensitivity ±0.15 dB, Directivity 15 dB. Tags: Module with Connectors. More details for CSM-10-13.5G SQ can be seen below.