The RMDU.2500-2900Nf from Response Microwave Inc is a RF Duplexer with Frequency 2500 to 2570 MHz(RX) / 2620 to 2900 MHz(TX), Band 1 2500 to 2570 MHz(RX), Band 2 2620 to 2900 MHz(TX), Power 50 W, Insertion Loss 1 to 1.2 dB. Tags: Module with Connectors. More details for RMDU.2500-2900Nf can be seen below.