The RMDU.1710-2170Nf from Response Microwave Inc is a RF Duplexer with Frequency 1710 to 1770 MHz(UL) / 2110 to 2170 MHz(DL), Band 1 1710 to 1770 MHz(UL), Band 2 2110 to 2170 MHz(DL), Power 50 W, Insertion Loss 1 dB. Tags: Module with Connectors. More details for RMDU.1710-2170Nf can be seen below.