[Elecraft] Re: Elecraft digest, Vol 4 #36 - 30 msgs

Thu Jan 30 09:43:00 2003

There may be two ways to attenuate sound, but what about the torroid
intensive solution which would neutralise it with an anti-phase signal!

Seriously though, I'm looking forward to seeing the outcome of the  acoustic
tile trial.

Mike
AC7MZ
K2 - 2599

Message: 5
From: "Stuart Rohre" <[email protected]>
To: "Wayne Burdick" <[email protected]>,
"Elecraft" <[email protected]>,
"Tom Hammond" <[email protected]>
Subject: Re: [Elecraft] KAT100 ATU and floor tile
Date: Wed, 29 Jan 2003 16:55:39 -0600

Two ways to attenuate sound:   Absorb it in sufficiently great transmission
loss material such as carpet tile, rough side toward sound source, and near
enough to not allow the sound to spread much before its trapped, and
increased density of the case by such as installing sides of lead, or a
double box with heavy material like sand in between.

The TL (transmission Loss) of building materials is often given on the box
of ceiling acoustic tiles, carpet tiles, etc.   Look up key words
"Acoustic Transmission Loss" on google.com for industry white papers on how
to pick acoustical attenuation materials.
72,
Stuart K5KVH