The AD915-1805D451 from Anatech Electronics is a RF Duplexer with Frequency 850 to 980 MHz / 1.71 to 1.9 GHz, Band 1 850 to 980 MHz, Band 2 1.71 to 1.9 GHz, Power 100 W, Insertion Loss 0.4 dB. Tags: Module with Connectors. More details for AD915-1805D451 can be seen below.