The AD1880-1960D237 from Anatech Electronics is a RF Duplexer with Frequency 1850 to 1910 MHz / 1930 to 1990 MHz, Band 1 1850 to 1910 MHz, Band 2 1930 to 1990 MHz, Power 150 W, Insertion Loss 0.85 to 1.2 dB. Tags: Module with Connectors. More details for AD1880-1960D237 can be seen below.