The DDP0604Q1227-1575P020-020 from Zhejiang Jiakang Electronics is a RF Duplexer with Frequency 1.217 to 1.237 GHz / 1.565 to 1.585 GHz, Band 1 1.217 to 1.237 GHz, Band 2 1.565 to 1.585 GHz, Power 3 W, Insertion Loss 1 dB. Tags: PCB. More details for DDP0604Q1227-1575P020-020 can be seen below.