The DDP0810R1947-2137P015-015 from Zhejiang Jiakang Electronics is a RF Duplexer with Frequency 1.9395 to 1.9545 GHz / 2.1295 to 2.1445 GHz, Band 1 1.9395 to 1.9545 GHz, Band 2 2.1295 to 2.1445 GHz, Power 10 W, Insertion Loss 2 dB. Tags: PCB. More details for DDP0810R1947-2137P015-015 can be seen below.