Another rule of thumb for those who care. When you hold a finger on something and it is 10 seconds to pain threshold, that location is about 100 degrees F. This is not an absolute constant, but I have checked it a few times since I was told that, and it seems to be true for me.
> On Jun 30, 2021, at 21:36, Geoffrey Feldman <geoffr...@comcast.net> wrote: > > My rule of thumb is that if you can keep your finger on it for a second or > so without pain, it's not too hot. > > > > The ambient temperature is really not the issue as much as whether heat is > carried off. I know it's hot in the pacific northwest but I think you can > still enjoy your gear. The larger issue is RFI from air conditioners. > > > > The environmental consideration many people neglect is atmospheric pressure. > As altitude increases, there is less air to carry the heat away. People > sometimes install fans with an idea to sucking out the heat. This is > actually wrong. The fan should blow ambient air in and the venting for it to > get out should intend that pressure inside the case be a bit higher than the > ambient pressure. More molecules against the hot part, the better. If you > read the fine print on electronic specifications you will often (and should > always) see an atmospheric spec with the heat spec. > > > > All the above is just rule-of-thumb of course. There is a lot more to > cooling electronics than the above but I think these are worth considering. > > > > Elecraft gear is pretty good at protecting itself as well. If your radio > cuts out, it's doing its job of living for more fun later. > > > > W1GCF > > Geoff > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to f.belliv...@comcast.net ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
