Quoting Christos <[EMAIL PROTECTED]>, on Sun 03 Aug 2008 10:32:56 AM PDT:
> But a major feature like dedicated image rejection per band is still > missing. Maybe it takes a big effort to find the lines in the code that > exclude sdr1k. I don't know that PowerSDR actually doesn't support per band calibration. When the program starts up with the F5K, it reads the calibration numbers from the EEPROM in the radio and stores them in a structure in PowerSDR. There's no particular reason why, in the SDR1K case, it can't be read from a file. (and presumaby that's what's in the code you published) However, getting the values for those numbers for the SDR1K is a bit of a challenge.. as Gerald pointed out, it requires external test equipment and setup, so it's not an automated process. At some point, Flexradio has to allocate it's exceedingly scarce software development resources to one thing and not another. Perhaps per-band calibration just isn't high enough on the priority list compared to, say, full break in QSK CW (certainly, there's a huge hue and cry for that, compared to image suppression)... There's a bit more than just reading in the table from a file involved. Realistically, one would also need to create the user interface for the calibration process (some variant on what's already done for the single cal), and that's a non-trivial process. At least for the F5K, no user interaction is needed, so the UI is very simple: "start cal" and stand back waiting for it to finish. For the multiband, you'd have "set signal generator to x,y,z. Press continue." attempt the measurement, validate that it's ok, "next band" having written this sort of thing, it's a real chore to make it clean and user acceptable: If you just whipped out a quick and dirty for yoursef, inevitably, the *second* person to use it would find all the places where you assumed that something would work. And.. right now, I believe Flexradio has a "no new features" sort of policy in place while they try and get to the 2.0 revision. _______________________________________________ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
