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/.
Alexander Chemeris alexander.chemeris at gmail.comHi all, Here is an update about a preselector frontend board on which we're working right now. Attached is an updated schematics of the board and 3D view of the board itself and the proposed way of mounting it to the main board. The github repository still contain an older revision of the schematics - I will update it a bit later when I get full project files from Andrey Sviyazov. https://github.com/chemeris/umtrx-schematics/tree/master/umtrx-v2-rxsel We would appreciate all constructive comments about the board design - from both RF and mechanical points of view. -- Regards, Alexander Chemeris. CEO, Fairwaves LLC / ООО УмРадио http://fairwaves.ru -------------- next part -------------- A non-text attachment was scrubbed... Name: UmSELv1-1.png Type: image/png Size: 172596 bytes Desc: not available URL: <http://lists.osmocom.org/pipermail/umtrx/attachments/20120823/a418f235/attachment.png> -------------- next part -------------- A non-text attachment was scrubbed... Name: UmTRXv2+UmSELv1-1.png Type: image/png Size: 91783 bytes Desc: not available URL: <http://lists.osmocom.org/pipermail/umtrx/attachments/20120823/a418f235/attachment-0001.png> -------------- next part -------------- A non-text attachment was scrubbed... Name: UmTRXv2+UmSELv1-2.png Type: image/png Size: 243530 bytes Desc: not available URL: <http://lists.osmocom.org/pipermail/umtrx/attachments/20120823/a418f235/attachment-0002.png> -------------- next part -------------- A non-text attachment was scrubbed... Name: UmTRXv2_RxSel.pdf Type: application/pdf Size: 419937 bytes Desc: not available URL: <http://lists.osmocom.org/pipermail/umtrx/attachments/20120823/a418f235/attachment.pdf>