The AE1722-1817DB165 from Anatech Electronics is a RF Duplexer with Frequency 1.71 to 1.735 GHz / 1.805 to 1.83 GHz, Band 1 1.71 to 1.735 GHz, Band 2 1.805 to 1.83 GHz, Insertion Loss 1 dB, Isolation 70 dB. Tags: Module with Connectors. More details for AE1722-1817DB165 can be seen below.