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May 2002

SCUBA-SE@RAVEN.UTC.EDU

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Subject:
From:
Mark Goldsmith <[log in to unmask]>
Reply To:
SouthEast US Scuba Diving Travel list <[log in to unmask]>
Date:
Thu, 23 May 2002 08:29:03 EDT
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In a message dated 5/23/2002 4:51:34 AM Eastern Standard Time,
[log in to unmask] writes:


> So now I have me new Halcyon Backplate/Wings/Harness, what is the DIR
> method & placing for a whistle ?
> Cheers

it generally works best when placed between the facial lips while
simultaneously  exhaling puffs or steady streams of air with sufficient force
to create sufficient volume to attract the rescuer to the rescueee as the
case may be.
regards
mark

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