The QUD-1021-VEU from Tamagawa Electronics Vietnam is a RF Duplexer with Frequency 930 to 360 MHz, 2100 to 2170 MHz / 930 to 960 MHz, 1920 to 1980 MHz, Band 1 930 to 360 MHz, 2100 to 2170 MHz, Band 2 930 to 960 MHz, 1920 to 1980 MHz, Power 1 to 40 W, Insertion Loss 0.5 to 1.5 dB. Tags: Module with Connectors. More details for QUD-1021-VEU can be seen below.