The AD3487-3587D290 from Anatech Electronics is a RF Duplexer with Frequency 3475 to 3500 MHz / 3575 to 3600 MHz, Band 1 3475 to 3500 MHz, Band 2 3575 to 3600 MHz, Insertion Loss 1 to 1.5 dB, Isolation 40 dB. Tags: Module with Connectors. More details for AD3487-3587D290 can be seen below.