The AM238-265D1185 from Anatech Electronics is a RF Duplexer with Frequency 234.375 to 241.875 MHz / 261.875 to 269.375 MHz, Band 1 234.375 to 241.875 MHz, Band 2 261.875 to 269.375 MHz, Power 3 W, Insertion Loss 3.5 dB. Tags: Surface Mount, Ceramic. More details for AM238-265D1185 can be seen below.