I have never been on FT8 mode and I rarely use my KPA500 so take this with a grain of salt. I would set the fan to a speed that provides some air flow without being annoying. Perhaps speed 2 or 3, if I recall correctly. This should at least delay it turning on the noisier higher speed speed fan and may minimize some of the cool down clicking.
John KK9A from: Bob McGraw K4TAX date: Tue Jul 3 09:24:13 EDT 2018 In running my KPA500 on FT-8 mode at about 400 watts output, what is the recommended setting for Fan CTL? I usually keep it in NORmal but have tried other settings. I watch the TEMP and see that it gets above 65ÂșC. The fan speed increments up and down as the temperature changes accordingly. All appears norms. But, do you find setting the Fan CTL to some value is more efficient in regard to cooling? Thanks in advance for your inputs. 73 Bob, K4TAX ______________________________________________________________ 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]

