The DUP-1052 from Tamagawa Electronics Vietnam is a RF Duplexer with Frequency 882 to 915 MHz / 927 to 960 MHz, Band 1 882 to 915 MHz, Band 2 927 to 960 MHz, Power 100 W, Insertion Loss 0.7 dB. Tags: Module with Connectors. More details for DUP-1052 can be seen below.