The AE1950-2140DB2110 from Anatech Electronics is a RF Duplexer with Frequency 1.92 to 1.98 GHz / 2.11 to 2.17 GHz, Band 1 1.92 to 1.98 GHz, Band 2 2.11 to 2.17 GHz, Insertion Loss 1 dB, Isolation 60 dB. Tags: Module with Connectors. More details for AE1950-2140DB2110 can be seen below.