I speculate that water runs off. But that said the preamp did run 4 years and I didn't really do anything special. In fact the preamps cleaned up and ready to be remounted tomorrow. But first I have to see what may have let the moisture in. At least was it something large that needs to be plugged etc. Thanks everyone Regards Paul.
On Mon, May 14, 2012 at 10:39 PM, Hal Murray <hmur...@megapathdsl.net>wrote: > > k3...@aol.com said: > > If you can keep the boards in a vertical mount position, and they have > been > > sprayed with a conformal coating, the heat from the components and the > > coating will keep any moisture from forming on the boards in a vertical > > position. We do this in several products we supply to the military. > > Does this help significantly for an antenna preamp that doesn't dissipate > much power? > > How much power does a board have to dissipate to keep dry? I assume it > depends upon the size of the board, but I doubt if it's linear. > > What's magic about vertical for keeping dry? I'd expect a vertical board > to > have better air flow and hence better cooling, but does that keep it dryer? > > > -- > These are my opinions. I hate spam. > > > > > _______________________________________________ > 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.
