Tim Ellison <[email protected]> wrote: > Try resetting the radio (DB) back to factory defaults and see if that > makes a difference. PowerSDR transfers the RX image calibration data from > the EEPROM to the database. If something happened during this data > transfer where the data is out of sync, then the WBIR (wide band image > rejection) process does not have the proper "seed" data to start the image > rejection process and it can result in image rejection being off, > especially if there are a lot of signals to process.
I tried it again this evening and it seems ok, better than 60 dB (now below the noise) identical on both the stable version and the beta (using a signal generator as source. I'll see how it goes and do a database reset if it recurs. It seems to take a second or two to settle after changeover from transmit, again identical on both versions of PowerSDR. > > If the DB reset does not work, then contact FlexRadio EU Support > ([email protected]) I'll try that if it recurs and doesn't respond to database reset. Thanks for your support. > > > -Tim > > > -----Original Message----- From: [email protected] > [mailto:[email protected]] On Behalf Of Brian Sent: Sunday, > June 05, 2011 6:59 AM To: [email protected] Subject: [FlexEdge] > Image rejection > > Having moved to thte latest version (2.1 rc3 IIRC, its on a different > computer) I have noticed the image 18khz lower in frequency (on receive, > don't know about transmit) is only 20-25db down. Haven't tried back on the > stable version yet but I don't recall seeing it) This is on at least 160m > and 6m. Is this a bug, do I need to re-calibrate (how?) or what? > > (Flex1500) > > -- Brian Duffell G3VGZ > > _______________________________________________ Flexedge mailing list > [email protected] > http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz This > is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used for > posting topics related to SDR software development and experimentalist who > are using beta versions of the software. > > > -- Brian D _______________________________________________ Flexedge mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used for posting topics related to SDR software development and experimentalist who are using beta versions of the software.
