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.comOh, pics here. Best regards, Andrey Sviyazov. 2013/3/18 Andrey Sviyazov <andreysviyaz at gmail.com> > Hi 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/20130318/7ec086a9/attachment.htm> -------------- next part -------------- A non-text attachment was scrubbed... Name: GSM_LNA_leakage.png Type: image/png Size: 21157 bytes Desc: not available URL: <http://lists.osmocom.org/pipermail/umtrx/attachments/20130318/7ec086a9/attachment.png> -------------- next part -------------- A non-text attachment was scrubbed... Name: GSM_LNA-D_leakage.png Type: image/png Size: 21115 bytes Desc: not available URL: <http://lists.osmocom.org/pipermail/umtrx/attachments/20130318/7ec086a9/attachment-0001.png>