Just to add to Jimmy's comments. After allowing the SDR-1k to warm up for hours, I tried the DSB method described here where you zero beat the constant tone with ticks (not just the ticks alone).
After calibrating from wwv using 15.0 MHz, the DSB method indicated that the zero beat frequency was 14.999995. This is easily done visually too by using the scope. When you are not on frequency, there are two separate waveforms on the scope. As you get closer to the zero beating the tone, it will appear as one waveform in the middle of the screen that doesn't "jump around". Now the real question: is this a problem with the calibration routine of just an anomaly of using a frequency standard that is effected by atmospheric and solar factors? -Tim --- Integrated Technical Services "Too much of everything is just enough." -Bob Barlow -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jimmy Jones Sent: Sunday, September 10, 2006 12:15 PM To: flexradio@flex-radio.biz Subject: Re: [Flexradio] Frequency Calibration on Recent SVN's I've noticed that the software does not cal wwv properly for some time now, On my radio it is always been down the band some. There is an absolute no fail method of calibrating wwv that I've found through the help of some of my buds. I use double sideband to manually calibrate and it's a completely fool proof, dead nuts on the money everytime tuneup. On my rig I can barely even understand wwv until it's very close to being on the money. That's the methid I use. ----- Original Message ----- From: "John Hansen" <[EMAIL PROTECTED]> To: <flexradio@flex-radio.biz> Sent: Sunday, September 10, 2006 10:51 AM Subject: [Flexradio] Frequency Calibration on Recent SVN's > I noticed that the frequency calibration was off on a couple of the > recent SVN's (WWV at 10 MHz was about 20 Hertz low). So I tried to > run the frequency calibration routine. When I do this I get a pop message > box that says, "Peak is Outside Valid Range." I don't have this > problem with 1.6.2. > > I know there is a proper place to report bugs and I know this > newsgroup isn't it, but I'm not sure where the proper place is. > > John W2FS > > _______________________________________________ > 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 > > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.1.405 / Virus Database: 268.12.2/442 - Release Date: > 9/8/2006 > > _______________________________________________ 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
