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/osmocom-sdr@lists.osmocom.org/.
Christian Daniel -- maintech GmbH cd at maintech.de-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi everybody, after a few weeks of apparent silence I'm here to report the current status of the OsmoSDR stick. I know that a bit more reporting and general traffic on the list would be good for the project, but please be patient with us since this project runs in all our spare time - and there is not much of that... I have to admit that the advent of the rtl-sdr is bit a kick into the stomach, but I fear that the problem lies with us and our slow progress. However I can only stress that the OsmoSDR will be more flexible, powerful, programmable (even stand-alone operation is possible!) and sensitive. Many of you don't care much about sensitivity, but you will notice the difference when you see it... But now to the facts: - - the OsmoSDR revision 2 review is completed and the PCBs are ordered - - depending on the workload of the PCB shop, we have to wait ten to 15 working days for the PCBs to ship to Stefan Reimann (DG8FAC) - - he will assemble 20 boards immediately (machine time is booked) - - after that we will tests and checks that no fatal bug remains - - after that the rest are assembled - - we will have about 100 boards then (most probably a few will need some rework as soldering is not a 100% process) For the revision 2 we changed the following things: - - clock output of the Si570 was reworked the mitigate voltage level problems on the E4000 input - - a lowpass in to E4000 input was added to kill harmonics from the Si570 (the Si570 produces a square wave signal) - - a ~20dB LNA was added to increase sensitivity to -125dB @ 450 MHz (at least we hope so :) - - a lowpass at the antenna input was added to avoid driving 100mW into the E4000 when a WLAN near to the stick goes on TX - - serial wire debugging for the SAM3U was added - - a few lines at the FPGA were rerouted - - LEDs moved to the border of the board - - the board was shrunk 1mm to fit into a casing - - the expansion pins were moved to fit into the 2.54mm grid (a breadboard should fit neatly on top) During the sensitivity tests I did two weeks ago I saw that the RX spectrum is pretty clean and the RX filters in the E4000 are really good. So - even with a few weeks delay - we can finally look forward to get our hands at the OsmoSDR and we will have a really good receiver at our hands! Cherio! Christian - -- - --------------------------------------------------- | maintech # Dipl. Inf (FH) Christian Daniel | | GmbH ### Otto-Hahn-Str. 15 · D-97204 Höchberg | - --------------------------------------------------- | AG Würzburg, HRB 8790 Tax-ID DE242279645 | - --------------------------------------------------- | http://www.maintech.de cd at maintech.de | - --------------------------------------------------- -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQEcBAEBAgAGBQJPaLNtAAoJEHkgzUIsAWrihOMIAIunTXO47hk4fcUxLjaj/mB3 24vBjxqpbnHWGgG35bLAjTICkpg0sZEgxppl3w7nKR1vzyoCVl2qdXfuFhrml/WP mREjLTjtYZB2o1snDKmyoV7jnvHlXKql4AbMnNz2XAlQ0kgDw+BLJf1CNvHpTeNK 6c0WA7XzVEZVYHiCBI8hDWl1/WUK2JLRdmJ7sFrINO40kn5ka5trUDDfCaAr/fAR +0rD0Fhqm3R7tOHmC9e4PWwslY1pGYB2pbcCbICHgEWlQQRSGxdSCzkEL0/STcuI rHuLTpfSrHkbn/TtHaIuVvfraAq8fRARiVqoMooIK0+h8bxfFiHxbHznuh33moY= =zTDS -----END PGP SIGNATURE-----