The CBP-20N-375 from Crane Aerospace & Electronics is a Directional Coupler with Frequency 5 to 750 MHz, Coupling 20 dB, Coupling Variation ±1 dB, Frequency Sensitivity ±0.5 to 0.75 dB, Directivity 18 to 20 dB. Tags: Drop-In. More details for CBP-20N-375 can be seen below.