The AMF0912-10 from Shanghai Huaxiang Computer Communication Engineering is a Dual Directional Coupler with Coupling 40 (Forward), 30 (Reverse), Frequency 960 MHz to 1.215 GHz, Average Power 100 W, Insertion Loss 0.4 dB, Directivity 20 dB. Tags: Module with Connectors. More details for AMF0912-10 can be seen below.