The CDM-30M-12G from Crane Aerospace & Electronics is a Dual Directional Coupler with Coupling 30 dB, Coupling Variation ±1.25 dB, Frequency 8000 to 16000 MHz, Average Power 50 W (CW), Insertion Loss 1 dB. Tags: Module with Connectors. More details for CDM-30M-12G can be seen below.