The CWK-20R-29G from Crane Aerospace & Electronics is a Directional Coupler with Frequency 18000 to 40000 MHz, Coupling 20 dB, Coupling Variation ±1 dB, Frequency Sensitivity ±0.65 dB, Directivity 12 dB. Tags: Module with Connectors. More details for CWK-20R-29G can be seen below.