Flexers, This is slightly off topic, but I've seen several folks' postings about tuning to WWV for "pretty good accuracy".
I wondered how close one can actually get by tuning to WWV, practically. I know it depends on where you are, atmospheric conditions, etc. But what are the practical upper boundaries to the accuracy of WWV calibration using the "phase" display, given a stable local oscillator in the Flex. I use a GPSDO (at 10MHz) for my "master oscillator". When I tune to WWV it's always within 1 Hz of where it was last time I checked. It's typically within .5 Hz or so (based on how long it takes for the phase display to cycle) but I haven't done any systematic testing for diurnal variations, etc. This is of philosophical / developmental interest to me - I'm interested in learning more about this. What are the relative magnitudes of the different factors at play - for example, does sound card variability contribute more or less than variability due to propagation, etc.? Does the ADC oscillator variability swamp any varibility due to internal Flex-Radio component drift? questions like that. Thoughts on this or pointers on learning more? Mark -------------- next part -------------- An HTML attachment was scrubbed... URL: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachments/20070207/a4ebe217/attachment.html _______________________________________________ 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 Knowledge Base: http://kb.flex-radio.com/
