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Background<br />
• In <strong>the</strong> fall of 2006 some fire departments discovered<br />
that voice audio from digital radios in <strong>the</strong> presence of<br />
background noise (common to fire operations) may<br />
cause distortion to <strong>the</strong> degree of becoming<br />
unintelligible.<br />
• Test results published in June 2008<br />
• Modified best practices and IAFC interim report<br />
published in July 2008<br />
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