Eric said: No typo here. It is useful to have a stronger signal than -73dBm when doing the image calibration.
So anyone have a good recommendation for a stable signal generator that won't break the bank? -Tim --- Integrated Technical Services "Too much of everything is just enough." -Rob Barlow -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Eric Wachsmann Sent: Thursday, September 14, 2006 2:44 PM To: [EMAIL PROTECTED]; [EMAIL PROTECTED]; [email protected] Subject: Re: [Flexradio] Image Null Calibration. No typo here. It is useful to have a stronger signal than -73dBm when doing the image calibration. Considering that the noise floor is going to be around -130dBm, this only gives you a range of about 60dB for a best case null (because it becomes difficult to null below the noise floor). Using a stronger input signal gives a larger image and thus the calibration can more effectively null the signal further (typically all the way into the noise floor). Eric Wachsmann FlexRadio Systems > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > radio.biz] On Behalf Of [EMAIL PROTECTED] > Sent: Thursday, September 14, 2006 1:38 PM > To: [EMAIL PROTECTED]; [email protected] > Subject: Re: [Flexradio] Image Null Calibration. > > I'm guessing this is a typo and possibly was meant to say 50uV of > which the XG-1/XG-2 is capable (i.e. -73dBm, as you state). I've used > my XG-1 to do this calibration and had assumed the signal level (at > S9) was adequate. What say, Eric? > > Pete, N3EVL > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of Van de Velde > > Eddy > > Sent: Thursday, September 14, 2006 1:49 PM > > To: [email protected] > > Subject: [Flexradio] Image Null Calibration. > > > > The maximum output of the Elacraft XG-2 is -73 dBm. The manual of > > the SDR-1000 requests a signal of -50 dBm for the Automatic > > calibration of the Image Null. > > > > Is the -73 dBm of the XG-2 insufficient for a reliable I mage Null > > Calibration ? > > > > 73 Eddy ON5UQ. > > -------------- next part -------------- An HTML attachment was > > scrubbed... > > URL: > > /pipermail/flexradio_flex-radio.biz/attachments/20060914/eddcc > > 9ff/attachment.html > > _______________________________________________ > > FlexRadio mailing list > > [email protected] > > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > > Archive Link: > > http://www.mail-archive.com/flexradio%40flex-radio.biz/ > > FlexRadio Homepage: http://www.flex-radio.com > > > > _______________________________________________ > FlexRadio mailing list > [email protected] > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ > FlexRadio Homepage: http://www.flex-radio.com _______________________________________________ FlexRadio mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com _______________________________________________ FlexRadio mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com
