The CSM-6M-4G from Crane Aerospace & Electronics is a Directional Coupler with Frequency 2600 to 5200 MHz, Coupling 6 dB, Coupling Variation ±1 dB, Frequency Sensitivity ±0.60 dB, Directivity 20 dB. Tags: Module with Connectors. More details for CSM-6M-4G can be seen below.