[email protected] said: > www.k5cm.com/soundcard.htm Nice, thanks.
>From there: > Sound card drift over this four hour period is about 250 micro Hertz. > The temp in the shack was going up during the measurement period. > Unfortunately I did not track the exact temp rise, but was about > around 4 to 6 degrees F. 250 micro Hz relative to 1000 Hz is 1/4 ppm. My memory is that junk PC crystals are ballpark of 1 ppm/degree. (That's probably per degree C rather than F, but that's only a factor of 2.) So 1/4 ppm for 4 degrees is better than I would have guessed. -- These are my opinions, not necessarily my employer's. I hate spam. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
