The AD3673-3773D322 from Anatech Electronics is a RF Duplexer with Frequency 3660.5 to 3685.5 MHz / 3760.5 to 3785.5 MHz, Band 1 3660.5 to 3685.5 MHz, Band 2 3760.5 to 3785.5 MHz, Insertion Loss 1 dB, Isolation 80 dB. Tags: Module with Connectors. More details for AD3673-3773D322 can be seen below.