I am sure that if real world conditions mimicked a radio immersed in still water, with air and water temperatures equal, there would be fewer failures. One of the issues with dive watches is that unless the watch is good to at least 150 feet, the added pressure of moving the watch through the water at 80 or 100 feet will exceed the pressure rating. The temperature differential of having a warm, or even hot radio or GPS, quickly immersed in cold water will far exceed the JS7 standard. The air inside has heated and expanded, the cold causes a partial vacuum and Cya! Also, just the act of dropping a unit under water will create additional pressure on the seals. When we produce truly waterproof devices for scuba use, they are potted; completely imbedded in an epoxy or silicone and often the battery is not user serviceable. Cya Bob Denton *************************************************************************** PaddleWise Paddling Mailing List - Any opinions or suggestions expressed here are solely those of the writer(s). You must assume the entire responsibility for reliance upon them. All postings copyright the author. Submissions: PaddleWise_at_PaddleWise.net Subscriptions: PaddleWise-request_at_PaddleWise.net Website: http://www.paddlewise.net/ ***************************************************************************Received on Fri Jun 03 2005 - 09:32:46 PDT
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