The AD1953-2130D404 from Anatech Electronics is a RF Duplexer with Frequency 1948.8 to 1958.8 MHz / 2110 to 2150 MHz, Band 1 1948.8 to 1958.8 MHz, Band 2 2110 to 2150 MHz, Power 79.43 W, Insertion Loss 1 dB. Tags: Module with Connectors. More details for AD1953-2130D404 can be seen below.