The SC-15N from Microlab is a Directional Coupler with Frequency 130 to 174 MHz, 380 to 512 MHz, 728 to 960 MHz, Coupling 15 dB, Directivity 17 to 20 dB, Average Power 50 W, Insertion Loss 0.25 dB(Dissipative). Tags: Module with Connectors. More details for SC-15N can be seen below.