The CDM-20M-1.5G from Crane Aerospace & Electronics is a Dual Directional Coupler with Coupling 20 dB, Coupling Variation ±1.25 dB, Frequency 1000 to 2000 MHz, Average Power 50 W (CW), Insertion Loss 0.5 dB. Tags: Module with Connectors. More details for CDM-20M-1.5G can be seen below.