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Andrey Sviyazov andreysviyaz at gmail.comActually, I don't have enough time to research of it more, because of preselector design in progress. Best regards, Andrey Sviyazov. 2012/8/3 Andrey Sviyazov <andreysviyaz at gmail.com> > 1/ Yes, my fears were confirmed - OHM4 footprint isn't correct (my > mistake), but it possible to mount from bottom side. > 2/ Noise plots are similar, I think we see limit of LMS performance but > not XO (see pictures here). > > Also, I found that for 1850MHz better to use Icp=1.2mA. > Therefore I decide to measure at 1.2mA for both frequencies just to > compare. > If Icp dependance of frequency confirmed, then we need lookup table for > this also. > > Best regards, > Andrey Sviyazov. > > > > 2012/8/3 Alexander Chemeris <alexander.chemeris at gmail.com> > >> So, looks like it has a bit worse far-end noise, but otherwise is >> about the same as TCXO we use now, correct? >> >> Btw, was it UmTRX layout incorrect or the OCXO pinout? >> >> On Fri, Aug 3, 2012 at 3:42 PM, Andrey Sviyazov <andreysviyaz at gmail.com> >> wrote: >> > Hi. >> > >> > Here LMS TxLO noise plot for OHM4048V-26MHz OCXO. >> > >> > Best regards, >> > Andrey Sviyazov. >> > >> > >> > >> > 2012/7/31 Andrey Sviyazov <andreysviyaz at gmail.com> >> >> >> >> That's good news! >> >> Yes, of course, I have to test it and then share some results. >> >> >> >> Best regards, >> >> Andrey Sviyazov. >> >> >> >> >> >> >> >> 2012/7/31 Alexander Chemeris <alexander.chemeris at gmail.com> >> >>> >> >>> Hi, >> >>> >> >>> I've received 10pcs of OHM4048052GG010020-26.0M today. Andrey Sviyazov >> >>> - could you measure their performance and test UmTRX with them? >> >>> >> >>> -- >> >>> Regards, >> >>> Alexander Chemeris. >> >>> CEO, Fairwaves LLC / ООО УмРадио >> >>> http://fairwaves.ru >> >>> >> >> >> > >> >> >> >> -- >> Regards, >> Alexander Chemeris. >> CEO, Fairwaves LLC / ООО УмРадио >> http://fairwaves.ru >> > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.osmocom.org/pipermail/umtrx/attachments/20120803/ff4a9098/attachment.htm>