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Thomas Tsou thomastsou at gmail.comOn Sun, Jul 22, 2012 at 3:21 PM, Alexander Chemeris <alexander.chemeris at gmail.com> wrote: > On Sun, Jul 22, 2012 at 10:51 PM, Thomas Tsou <thomastsou at gmail.com> wrote: >> Overall measurements are close (either above or below) to 1.5/5 for >> the 900 band in general. 945 MHz is currently the best case, but that >> is the frequency I spent the most time on with calibration. Do we need >> to be consistently below 1.5/5 or just close? > > Thanks for the measurements. At the end we should be below that at all > GSM bands. For now it's fine to be close. > > I also noticed that your frequency is far off - could you calibrate it > and make pictures of the best and worst case in the 900 band? Perhaps this is a silly question, but how do I calibrate the clock? or use an external reference signal? > And just to be sure - could you check what TCXO do you have on the > UmTRX? It should be TCD4029-26.0M, probably marked like PLEU4030Z. 2600 028 PLEU 4030Z Thomas