During CQWW RTTY this weekend I ran mine at level 3. Normally I keep it at the NOR setting. When I was in the S&P mode the KPA500 stayed at this level. When I was in Run mode the KPA500 would occasionally go to the highest speed when working a pile up. My antennas are pretty much tuned and I kept my output between 300 & 400 W.
Irwin KD3TB On Sun, Sep 29, 2019 at 10:40 PM Andy Durbin <a.dur...@msn.com> wrote: > The KPA500 offers a minimum fan speed setting which is settable by menu or > serial command. Some posters have advocated setting a minimum fan speed > higher than zero, presumably thinking it offers some advantage in thermal > management. > > Does anyone have any hard data that shows that the KPA500 runs cooler, or > with lower peak fan speed, when minimum fan speed is set above zero. > > Running a rigorous test may not be easy since it would seem to require the > same ambient temperature, same finals starting temperature, same TX > periods, and same antenna system load. > > I'm curious because, before CQ-WW-RTTY I configured my KPA500 to set min > fan speed to 1 at start of TX and reset min speed to zero 30 seconds after > stop of TX. Of course the fans ran faster than min speed during TX but I > don't have any feel for whether the higher speeds were any more protracted > than before the min speed change. > > Please share you experience of using min fan speed greater than zero, and > any data if you have it. > > 73, > Andy, k3wyc > > > ______________________________________________________________ > 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 idar...@gmail.com > -- Irwin KD3TB ______________________________________________________________ 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
