The CRM-20-2.5 from Crane Aerospace & Electronics is a Directional Coupler with Frequency 0.1 to 5 MHz, Coupling 20 dB, Coupling Variation ±1 dB, Frequency Sensitivity ±0.5 dB, Directivity 30 dB. Tags: Module with Connectors. More details for CRM-20-2.5 can be seen below.