The AE1972-2162DB2000D from Anatech Electronics is a RF Duplexer with Frequency 1.965 to 1.98 GHz / 2.155 to 2.17 GHz, Band 1 1.965 to 1.98 GHz, Band 2 2.155 to 2.17 GHz, Insertion Loss 0.7 dB, Isolation 70 dB. Tags: Module with Connectors. More details for AE1972-2162DB2000D can be seen below.