The CBN-30M-4G from Crane Aerospace & Electronics is a Directional Coupler with Frequency 2600 to 5200 MHz, Coupling 30 dB, Coupling Variation ±1 dB, Frequency Sensitivity ±0.75 dB, Directivity 18 dB. Tags: Module with Connectors. More details for CBN-30M-4G can be seen below.