This is merely a historical archive of years 2008-2021, before the migration to mailman3.
A maintained and still updated list archive can be found at https://lists.osmocom.org/hyperkitty/list/UmTRX@lists.osmocom.org/.
Andrey Sviyazov andreysviyaz at gmail.comHi all. Here attached pics of UmSELv1 inputs leakage for E-GSM900. Measured at MIXER inputs, i.e. it is diversity switches isolation and/or between LNA's (PCB). As for the DCS, my first quick test shows that isolation is not so good and around 15dB only. Best regards, Andrey Sviyazov. 2013/3/18 Alexander Chemeris <alexander.chemeris at gmail.com> > Hi all, > > We've received UmSEL units from the manufacturing and working on its > testing and integration right now. Results are as expected so far, > which is a good sign. > > Attached are pictures of UmSELs and UmSEL on a UmTRX: > > https://lh6.googleusercontent.com/-mdrwUTthuCE/UUa1PXmXqEI/AAAAAAAAFLY/A6ne42K5jiE/s852/2013-03-17 > > https://lh5.googleusercontent.com/-nC-F9O9NM1U/UUa1j0488SI/AAAAAAAAFLw/rCzvCF4WJjs/s852/2013-03-17 > > LNA gain measurements, made by Andrey Sviyazov are attached here as well. > > -- > 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/20130318/c906c30d/attachment.htm>