Re: [IRCA] WATERPROOF BOXES (was: DKAZ questions)

[Nick Hall-Patch <nhp@xxxxxxxx>]

Yes I believe it does, but the thinking is that it is a tiny hole, 
and so not much more air than might find its way inside in any case.

If your box has an air tight seal everywhere, you will likely get 
away with the desiccant pack to dispose of the moisture that is in 
the air that you seal in with it.     At work, that was done with 
boxes that would be submerged (by definition an air tight seal on 
those boxes, rubber o-rings and grease, seated cleanly), but the 
desiccant would always be replaced if the box was ever opened.

If a small leak of moist air finds it way around a connector for 
example, you will find yourself with a pile of desiccant mush in one 
corner of the box eventually.   We should all join Bill B. in Arizona 
to solve this problem, hi.

best wishes,

Nick



At 16:28 30-10-16, Mark Durenberger wrote:
> The other concern about weep holes may be unfounded: What if the 
> boxes are subjected to a moist/foggy environment?  Does that ambient 
> moisture get inside the box?
>
>
> Regards,
>
> Mark Durenberger
>
>
>
> -----Original Message----- From: Nick Hall-Patch
> Sent: Sunday, October 30, 2016 10:31 AM
> To: Mailing list for the International Radio Club of America
> Subject: Re: [IRCA] WATERPROOF BOXES (was: DKAZ questions)
>
> One thing that will interest me is whether you get condensation
> inside those sealed boxes Mark and Guy.    Over the years, a number
> of radio amateurs have found they needed to add bleed holes on the
> underside of the box to allow condensation to escape, at least for
> long term deployment.
>
> I believe the problem is that moist air can find its way into the
> box, even if actual moisture can't, and then it gets cooler and the
> moisture condenses and has nowhere to go.
>
> It's a battle!
>
> I've sealed up regular plastic boxes over the years with a runny
> silicone compound used for sealing windshields (auto supply stores
> have it, Permatex is one of the brands), figuring I won't be taking
> it apart except in direst circumstances.  Then I have had to add a
> bleed hole anyway.
>
> best wishes,
>
> Nick
>
>
> At 14:04 30-10-16, Mark4@xxxxxxxxxxxxxxx wrote:
> > Guy, I ordered a bunch of these and have been getting e-mails in 
> > bad English about running into customs problems, and so sorry, and 
> > if I send my PayPal info he'll refund the money etc..  So it might 
> > have become a bad bet but tnx anyway.  On the other hand the boxes 
> > may eventually arrive and I'll be the first to apologize.
> >
> > Meanwhile if someone IS looking for small waterproof boxes, try this:
> >
> > https://www.amazon.com/gp/product/B00E0H7HFK/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1
> >
> > Mine arrived in the usual two days and are very well-built.
> >
> >
> > I'm halfway through a complete how-to story on waterproofing 
> > antenna terminations and hope to have this published in a week or two.
> >
> > Cheers!
> >
> > Mark Durenberger
> >
> > -----Original Message----- From: Guy Atkins
> >
> > Last year I came upon this weatherproof model and have found the 
> > quality to be very impressive for the price:
> > http://www.ebay.com/itm/1x-Waterproof-Plastic-Enclosure-Electronic-Project-Box-Instrument-Case-DIY-Hot-/271598155425
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> Nick Hall-Patch
> Victoria, BC
> Canada
>
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Nick Hall-Patch
Victoria, BC
Canada 

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