The CSM-30M-1.5G from Crane Aerospace & Electronics is a Directional Coupler with Frequency 1000 to 2000 MHz, Coupling 30 dB, Coupling Variation ±1.25 dB, Frequency Sensitivity ±0.75 dB, Directivity 25 dB. Tags: Module with Connectors. More details for CSM-30M-1.5G can be seen below.