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Alexander Chemeris alexander.chemeris at gmail.comOn Mon, Oct 15, 2012 at 12:13 PM, Andrey Sviyazov <andreysviyaz at gmail.com> wrote: > Since we decided to make version 3 (due to additions of LMS thermosensors) > then we can also add external Fref prescaler for PLL, no problems here. Regarding TCXO frequency. I think we're not going to release UmTRXv3 immediately, as UmTRXv2 works well for GSM. If I remember correctly, we planned to connect temperature sensors to unused debug pins on UmTRXv2 or to extension connector together with UmSEL daughter-board. Meantime, I want to be able to test LTE with UmTRXv2 and thus my question was which maximum TCXO frequency we could use. It seems like the answer is 30.72MHz, because we don't have prescaler for PLL. -- Regards, Alexander Chemeris. CEO, Fairwaves LLC / ООО УмРадио http://fairwaves.ru