The AD2000-2185D300 from Anatech Electronics is a RF Duplexer with Frequency 2170 to 2200 MHz / 1985 to 2015 MHz, Band 1 2170 to 2200 MHz, Band 2 1985 to 2015 MHz, Insertion Loss 1 dB, Isolation 65 dB. Tags: Module with Connectors. More details for AD2000-2185D300 can be seen below.