The JFCD1850T1990NF from JQL Electronics is a RF Duplexer with Frequency 1.85 to 1.99 GHz, Band 1 1.85 to 9.10 GHz, Band 2 1.93 to 1.99 GHz, Power 60 W, Insertion Loss 1 dB. Tags: Module with Connectors. More details for JFCD1850T1990NF can be seen below.