The AD3425-3525D276 from Anatech Electronics is a RF Duplexer with Frequency 3400 to 3450 MHz / 3500 to 3550 MHz, Band 1 3400 to 3450 MHz, Band 2 3500 to 3550 MHz, Insertion Loss 1 dB, Isolation 50 dB. Tags: Module with Connectors. More details for AD3425-3525D276 can be seen below.