The AM3318-3394D530 from Anatech Electronics is a RF Duplexer with Frequency 3.31 to 3.32 GHz / 3.39 to 3.4 GHz, Band 1 3312 to 3324 MHz, Band 2 3388 to 3400 MHz, Power 5 W, Insertion Loss 3 dB. Tags: Surface Mount, Ceramic. More details for AM3318-3394D530 can be seen below.