This place has them, plus some other stuff that may be of interest to RF types building outdoor devices: http://www.sealingdevices.com/products/gore-vents
Unfortunately it looks like you need to ask for a quote, so they may not be open to small orders. Also, McMaster Carr has an assortment of non-Gore breathers using porous bronze or stainless: http://www.mcmaster.com/#breather-vents/=hjnav7 Click on the "Breather Vents" in the upper left. -John -----Original Message----- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of George Dubovsky Sent: Tuesday, May 15, 2012 7:03 AM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] wwvb weak on east coast especially when the pre-amps under water. All, W.L.Gore and Associates makes a whole line of these things, but I'm not sure where you go to buy just one. http://www.gore.com/en_xx/products/venting/protective/index.html?xcmp=ijdgpvmktgurl 73, geo - n4ua On Tue, May 15, 2012 at 2:59 AM, Attila Kinali <att...@kinali.ch> wrote: > On Mon, 14 May 2012 18:01:01 -0400 > Joseph M Gwinn <gw...@raytheon.com> wrote: > > > Modern outdoor enclosures use a filter of some kind, but the underlying > > principle is the same. > > I don't know what other types are around, but we use vents with > a gore-tex foil over them. Keeps water out but lets the case breath. > This prevents any pressure build up, which would then start to suck > watter in from the seal. > > Unfortunately, i'm currently unable to find the maker or the type of > the vent... If anyone is interested in those, i'll can ask around. > > Attila Kinali > > -- > The trouble with you, Shev, is you don't say anything until you've saved > up a whole truckload of damned heavy brick arguments and then you dump > them all out and never look at the bleeding body mangled beneath the heap > -- Tirin, The Dispossessed, U. Le Guin > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.