The RMDU.1427-1500Nf from Response Microwave Inc is a RF Duplexer with Frequency 1427.9 to 1452.9 MHz (RX) / 1475.9 to 1500.9 MHz (TX), Band 1 1427.9 to 1452.9 MHz (RX), Band 2 1475.9 to 1500.9 MHz (TX), Power 50 W, Insertion Loss 3 dB. Tags: Module with Connectors. More details for RMDU.1427-1500Nf can be seen below.