OsmoSDR progress

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hello everybody, following up on Harald's great progress I wrote some tool to verify the RF purity of our design. This is the last step before we can order the final PCBs and start production. Sadly from my current results we have some room for improvements. Right now I'm reviewing the E4000 driver as I suspect the visible steps in the attached spectrum to be switching points in the E4000. Perhaps something can be improved here... Stefan told me that without any antenna the output levels of the E4000 should be below the LSB limit of the ADC - clearly we have a lot of noise on the signal. But we also don't have any I/Q calibration and I can see significant offsets on these lines... I'll keep you posted! Cheerio, 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(a)maintech.de | - ---------------------------------------------------