Dave, I use my Elecraft XG-1 at 50uV to do the RX level calibration (this corresponds to -73dBm which is S9). I use either the XG-1 or wwv at 10.0MHz for the RX freq calibration. As pointed out earlier, the RX null requires a stronger sig than the 50uV supplied by the XG-1 so a second TX is a good choice for this calibration.
Your situation with the noise floor so low sounds like something isn't right with the level cal. My noise floor typically sits at about -130dBm on 20m with med pre-amp setting. It sounds like you need to recalibrate the RX level against a known sig level, if I'm reading your comments correctly. Pete, N3EVL > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Eric Wachsmann > Sent: Friday, September 22, 2006 2:00 PM > To: 'David Ackrill'; [EMAIL PROTECTED] > Cc: flexradio@flex-radio.biz > Subject: Re: [Flexradio] New SDR1000 has arrived > > If you have a dummy load, we will always recommend you just > running the calibration routine as opposed to entering the > data we provide. We provide the data as a historical > reference and for those without a dummy load. > > You will get the most accurate results running the > calibration with your radio at your location with your unique > environment variables. > > > Eric Wachsmann > FlexRadio Systems > > > -----Original Message----- > > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] > > radio.biz] On Behalf Of David Ackrill > > Sent: Friday, September 22, 2006 12:43 PM > > To: [EMAIL PROTECTED] > > Cc: flexradio@flex-radio.biz > > Subject: Re: [Flexradio] New SDR1000 has arrived > > > > Mike Naruta wrote: > > > Dave, if you import the database from the previous > version, it will > > > remember the PA gain settings last entered. > > > > > > > Thanks for the advice Mike, > > > > Do I need to re-enter the Test Results, on the paperwork > that came with > > the rig, or is it safe to just run the calibration routine with the > > default values, I wonder? > > > > Also, now I've calibrated the RX, the RX floor is below the > display, and > > the setting wont let me see it below -200dB. I wonder if I got the > > calibration set up correctly? I tuned to 10MHz, found a > nice strong WWV > > transmission and PowerSDR seemed happy with it and ran the RX > > calibration programme using -130 as per the instruction for > having the > > RFE board installed. > > > > Dave (G0DJA) > > > > _______________________________________________ > > FlexRadio mailing list > > FlexRadio@flex-radio.biz > > 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 > FlexRadio@flex-radio.biz > 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 FlexRadio@flex-radio.biz 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
