The QUD-103-B-VEUE from Tamagawa Electronics Vietnam is a RF Duplexer with Frequency 850 MHz / 900 MHz / 1800 MHz / 2100 MHz, Band 1 DC to 850 MHz, Band 2 DC to 900 MHz, Isolation 50 dB. Tags: Rack Mount. More details for QUD-103-B-VEUE can be seen below.