The JFCD1920T2170SF from JQL Electronics is a RF Duplexer with Frequency 1.92 to 2.17 GHz, Band 1 1.92 to 1.98 GHz, Band 2 2.11 to 2.17 GHz, Power 50 W, Insertion Loss 0.7 dB. Tags: Module with Connectors. More details for JFCD1920T2170SF can be seen below.