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Re: [TenTec] 400 Hz CW

To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Subject: Re: [TenTec] 400 Hz CW
From: Ken Brown <ken.d.brown@verizon.net>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Sat, 04 Mar 2006 10:29:17 -1000
List-post: <mailto:tentec@contesting.com>
> In general we do loose hearing in the upper end of the audio spectrum as we 
> age. 
Low frequency audio into the ear canal is a bit like VHF RF into a 
microwave waveguide. Energy transfer from outside to the ear drum is no 
doubt much more efficient at higher audio frequencies.


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