The SG-T-1747.5-1845_N from A-Info is a RF Duplexer with Frequency 1.71 to 1.885 GHz, Band 1 1.71 to 1.785 GHz, Band 2 1.805 to 1.885 GHz, Power 50 W, Insertion Loss 1 dB. Tags: Module with Connectors. More details for SG-T-1747.5-1845_N can be seen below.