The AM2520-2675D1075 from Anatech Electronics is a RF Duplexer with Frequency 2.51 to 2.54 GHz / 2.66 to 2.69 GHz, Band 1 2505 to 2535 MHz, Band 2 2660 to 2690 MHz, Power 3 W, Insertion Loss 2 dB. Tags: Surface Mount, Ceramic. More details for AM2520-2675D1075 can be seen below.