The AM1575-1189D1167 from Anatech Electronics is a RF Duplexer with Frequency 1557.92 to 1592.92 MHz / 1167 to 1212 MHz, Band 1 1557.92 to 1592.92 MHz, Band 2 1167 to 1212 MHz, Insertion Loss 0.5 to 2.8 dB, Isolation 50 dB. Tags: Surface Mount, Ceramic. More details for AM1575-1189D1167 can be seen below.