The MD10C1747/1842F75FCA from Vanlong is a RF Duplexer with Frequency 1.71 to 1.88 GHz, Band 1 1.71 to 1.785 GHz, Band 2 1.805 to 1.88 GHz, Insertion Loss 3.2 to 3.5 dB, Attenuation 30 dB. Tags: Surface Mount. More details for MD10C1747/1842F75FCA can be seen below.