[Lowfer] Ultra accurate soundcard calibration

[ToddRoberts2001 at aol.com]

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