The RMDU.1700-2190Nf from Response Microwave Inc is a RF Duplexer with Frequency 1700 to 1790 MHz (DCS) / 1920 to 1980 MHz (RX), 1805 to 1880 MHz (DCS) / 2100 to 2190 MHz (TX), Band 1 1700 to 1790 MHz (DCS) / 1920 to 1980 MHz (RX), Band 2 1805 to 1880 MHz (DCS) / 2100 to 2190 MHz (TX), Power 100 W, Insertion Loss 1.2 dB. Tags: Module with Connectors. More details for RMDU.1700-2190Nf can be seen below.