[NSRCA-discussion] Sound measurement

[Jon Lowe]

Earl,
Thanks, but I still can't find it in the rule book.  Anyone know where it is?  John Fuqua??  If it isn't there, how can we enforce it?


Jon



-----Original Message-----
From: ehaury <ejhaury at comcast.net>
To: General pattern discussion <nsrca-discussion at lists.nsrca.org>
Sent: Wed, Jul 20, 2011 8:54 am
Subject: Re: [NSRCA-discussion] Sound measurement


Jon


The spec is dbA so - A scale. Typically use "Fast" unless reading is varying 3db or so (unlikely), then use slow.


Earl

Sent from my iPhone

On Jul 20, 2011, at 8:53 AM, Jon Lowe <jonlowe at aol.com> wrote:




Does anyone know where the requirements for the settings on the dB meter are in the Competition regulations?  The regs are very specific as to the placement of the sound meter to the aircraft, distances, etc, but I can't find the requirements for the use of "A" or "C" weighting, or "Fast" or Slow" response.  I think we are supposed to use "A" weighting, and Slow response, but I'm not sure.  


Jon


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