sound meter

[Tony Stillman]

Calibration will only last a few HOURS, trust me!  If you don't purchase a calibration device, your wasting your money...

Tony Stillman
Radio South
3702 N. Pace Blvd.
Pensacola, FL 32505
1-800-962-7802
www.radiosouthrc.com
  ----- Original Message ----- 
  From: Del K. Rykert 
  To: discussion at nsrca.org 
  Sent: Saturday, April 24, 2004 10:35 AM
  Subject: Re: sound meter


  My radio shack soundmeter was off by almost 3 dB when it was calibrated. 

          Del
    ----- Original Message ----- 
    From: Earl Haury 
    To: discussion at nsrca.org 
    Sent: Saturday, April 24, 2004 9:05 AM
    Subject: Re: sound meter


    Steve

    It matters a lot. The rules specify dB-A, so use the A scale. Without a calibrator most sound meters, even the expensive variety, are really only good for comparative measurements. So - use it to find what makes the airplane quieter but don't get fixated on the absolute number without a calibrated reference.

    Earl
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