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From: trey@ne*.co* (Trey)
To: <NPerry255@ao*.co*>, <techdiver@aquanaut.com>
Subject: RE: WKPP deco history
Date: Thu, 2 Nov 2000 16:54:33 -0500
I would start the steps deep than either program recommend and shorten the
intermediate steps , especially the 50-40-30 beyond what Bruce recommends .
The reason for the first part is the "minimum" rule , and the reason for the
second is that one can off gas more safely in bubble form up higher right
before the oxygen steps, assuming no PFO or other shunt. In fact, off
gassing in bubble form up high is more efficient and effective, and before
anyone starts howling, this is what you are doing by getting out of the
water after the dive ANYWAY.

I do not know what those setting are - I have not used a deco program in
years.

-----Original Message-----
From: NPerry255@ao*.co* [mailto:NPerry255@ao*.co*]
Sent: Thursday, November 02, 2000 4:27 PM
To: trey@ne*.co*; techdiver@aquanaut.com
Subject: Re: WKPP deco history


George,
    Great stuff -- Thanks!
    Deco follow-up: I've seen RGBM tables (ranged), but they don't reflect
my
mixes (often higher He%) or give credit for 50% O2 at 70', and are not
multi-level; I've been happily using GUE Deco Planner -- low Gradient Factor
set to 15%, because this closely simulates RGBM deep stops.  However,
because
it's Haldanian-based, the 20' & 10' stops lengthen out.  Although my dives
are short (20 min.) bounce profiles, max. 220' - 250', they are in cold,
OPEN
ocean, where surface conditions can turn nasty during hang.  Would you
recommend "opening up" the high G.F. (set at 85%), or you mentioned
"tricking" Buhlman-model programs by inputting lower He/higher O2
percentages
than actual?  Any advice would be appreciated (I don't want to "fudge" it
and
cut the wrong corners).  Thanks for helping out new list members!
    Nelson Perry

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