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  1. R

    Gas Blending Math (He and Nitrox)

    Thanks to the wonderful information Ihave gleaned from posts on this board, and in Vance Harlow's super Oxygen Hacker's Companion, I have built a continuous mixer (knew I could find a use for that OxySpy) to use with my Max-Air 35. Now, the question I have is where can I find the math that...
  2. R

    Where do subs measure depth from?

    I have been watching a spate of submarine-related shows on the Discovery Channel and PBS, and I was wondering this: When the Captian says "Take 'er down to 150 feet." where are they measuring the depth from? Thanks!
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    GAP Software OCX or DLL?

    GAP started giving me an out of range error. Uninstalling the software does not fix the problem, so the culprit has to be a corrupted DLL or OCX. Since the software is not supported, does anyone know whay files it installs in the system directory? Thanks!
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    Help with link

    Someone posted a link to a discussion of the + rating of LP Steel tanks, and the link stated that, essentially, once a plus always a plus. Does anyone recall the actual link, and did the discussion have any authority? (Could I use it to convince my local fill guy to put in the extra fizz?)...
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    Where to get Y-valves

    Does anyone know where I can get a Beuchat or Sopras Y-Valve? I would like to get one big LP tank for when I don't feel like horsing about doubles, and H-Valves seem to take forever to turn on or off. Thanks!
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