The AM5740-5860D1037 from Anatech Electronics is a RF Duplexer with Frequency 5.7 to 5.78 GHz / 5.82 to 5.9 GHz, Band 1 5700 to 5780 MHz, Band 2 5820 to 5900 MHz, Power 3 W, Insertion Loss 3.5 dB. Tags: Surface Mount, Ceramic. More details for AM5740-5860D1037 can be seen below.