I think reaching fan speed Level 5 requires clearance for take off :)
FWIW, Wayne answered my CQ on 40 CW today with his K4. Of course, it sounded terrific. I want one!! I wonder if I can convince the XYL to contribute her economic stimulus check to the cause? Hmmm... John K7FD > On May 3, 2020, at 7:42 PM, Andy Durbin <[email protected]> wrote: > > "It is interesting to hear how others experience their KPA500s over various > conditions." > > I have over a years's worth of KPA500 data recorded but it takes some effort > to run it through the Excel templates to make pretty plots. > > My KPA500 temperatures are strongly influenced by ambient temperature. Shack > temperature is often over 30 deg C in the summer months and it's not at all > unusual for my fan to run at level 3 in FT8 QSO. I think I have only reached > fan speed 5 twice and that was while running temperature tests not while > operating. I terminated those tests at fan speed 5 and didn't wish to push > it any higher. > > So many people seem to think reducing the output power will keep the > temperature down. It does not. Half power is about the worst heat > dissipation condition for the KPA500. > > 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]

