Hi there, As LTE-Cell-Scanner doesn't support TDD mode: https://github.com/Evrytania/LTE-Cell-Scanner I fork LTE-Cell-Scanner and add TDD support to it: https://github.com/JiaoXianjun/LTE-Cell-Scanner (Not reviewed by James Peroulas, so it is just experimental currently.) It works fine with rtl-sdr E4k tuner dongle below 2.2GHz, but doesn't work in 2.5~2.7GHz even with external MMDS-LNB. Because the algorithm assumes analytic relationship between carrier and sampling frequency error. I write some matlab scripts (https://github.com/JiaoXianjun/rtl-sdr-LTE ) to separate carrier and sampling processing in algorithm. Aided by MMDS-LNB, the scripts can detect TDD&FDD LTE cell in 2.5~2.7GHz now! 12 LTE Cells information are decoded. 2 are FDD LTE, the rest are TD-LTE. Because here is China! (Partly because that TD-LTE is announed earier than FDD by government) Hope that in the future these features can be merged to original LTE-Cell-Scanner. Scanning results and video are attached. http://www.youtube.com/watch?v=4zRLgxzn4Pc