[Lowfer] Ultra accurate soundcard calibration

[Douglas D. Williams]

Would that method not be limited by the frequency accuracy of the receiver
that you used to tune WWV with?

73, Doug KB4OER

On Sun, Mar 3, 2013 at 12:23 PM, <ToddRoberts2001 at aol.com> wrote:

> In a message dated 3/3/2013 11:40:51 A.M. Eastern Standard Time,
> jrusgrove at comcast.net writes:
>
> Ultra accurate sound card calibration using a 'spare' computer and Spectrum
>  Laboratory.
>
> http://www.w1vd.com/SoundcardCalibration.html .
>
> Jay  W1VD  WD2XNS  WE2XGR/2
>
>
> Thanks for the info, Jay. So far I have had pretty good luck using
> John W1TAG's suggestion to tune in WWV in the AM mode and
> use the 500 or 600Hz tones for a super-accurate audio frequency.
>
> Then I check the sound card calibration using ARGO to see what it  reports
> the audio tone as. In my case ARGO says the tone is within .01Hz of  500Hz.
> so I figure the calibration should be close enough?  If someone  is already
> familiar with ARGO wouldn't that work as well as Spectran for this
> purpose?
>
> 73 - Todd WD4NGG
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