The DUP-1074 from Tamagawa Electronics Vietnam is a RF Duplexer with Frequency 788 to 798 MHz / 758 to 768 MHz, Band 1 788 to 798 MHz, Band 2 758 to 768 MHz, Power 300 W, Insertion Loss 2 to 2.5 dB. Tags: Module with Connectors. More details for DUP-1074 can be seen below.