The AM2307-2352D1018 from Anatech Electronics is a RF Duplexer with Frequency 2305 to 2310 MHz / 2350 to 2355 MHz, Band 1 2305 to 2310 MHz, Band 2 2350 to 2355 MHz, Power 3 W, Insertion Loss 2.5 dB. Tags: Surface Mount, Ceramic. More details for AM2307-2352D1018 can be seen below.