The AD1710-2155/1850-1990D438 from Anatech Electronics is a RF Duplexer with Frequency 1710 to 2155 MHz / 1850 to 1990 MHz, Band 1 1710 to 2155 MHz, Band 2 1850 to 1990 MHz, Power 250 W, Insertion Loss 0.3 dB. Tags: Module with Connectors. More details for AD1710-2155/1850-1990D438 can be seen below.