The AD2442-2557D471 from Anatech Electronics is a RF Duplexer with Frequency 2395 to 2490 MHz / 2510 to 2605 MHz, Band 1 2395 to 2490 MHz, Band 2 2510 to 2605 MHz, Insertion Loss 2 dB, Isolation 65 dB. Tags: Module with Connectors. More details for AD2442-2557D471 can be seen below.