All you guys had to do was ask. When going down, the hysteresis is 3 degrees. That means that each threshold is shifted down 3 degrees. The hysteresis is necessary to keep the fan speed from bouncing up and down when the temperature is at one of the switch points.
73! Jack, W6FB > On Sep 30, 2019, at 10:57 AM, Michael Walker <[email protected]> wrote: > > Andy > > I would call Elecraft and ask them directly. Unless they respond directly > here in the forum everyone is just guessing > > Mike > > > >> On Sep 30, 2019, at 1:13 PM, Andy Durbin <[email protected]> wrote: >> >> "I got the thresholds from Elecraft directly. >> I never worried too much about them since the Elecraft guys are pretty smart >> people and likely have done a lot more research on this than most of us." >> >> That's possible but they only gave you half the information. The thresholds >> you quoted are for increasing temperature. The fan speed step down >> thresholds are lower than the step up thresholds. (I have experimental data >> for fan speeds up to, and including, 5 but have never seen 6 except when I >> set min speed to 6 to hear how loud it was.) >> >> I measured the fan speed thresholds over a year ago but that information >> doesn't answer the question about any operation advantage of running min >> speed greater than zero. >> >> 73, >> Andy, k3wyc >> >> >> >> >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[email protected] >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to [email protected] > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
