The JFCD0276T0288NF from JQL Electronics is a RF Duplexer with Frequency 276.5 to 287.5 MHz, Band 1 276.5 to 277.56 MHz, Band 2 286.5 to 287.5 MHz, Power 200 W, Insertion Loss 1.5 dB. Tags: Module with Connectors. More details for JFCD0276T0288NF can be seen below.