I ragchew on CW and have my KPA500 fan set on level 2 as a default. I don't really keep an eye on the temp. When I hear fan level 3 kick in, that's my cue I've been too longed winded and time to turn it over :)
John K7FD > On May 6, 2020, at 11:03 AM, Tom Azlin W7SUA <[email protected]> wrote: > > Hi Dave, > > I run around 100-150 watts out of my KPA500 using 5-7 watts from my K3 with > the KPA500 hitting 70C using Olivia during nets. I assume could go to 250 but > never needed that much power. Does not seem to be a problem with temps above > 70c. Also run up to 500w PEP using SSB when needed. > > I did hear Wayne say run full power RTTY with no fear. > > 73, tom w7sua > > > > > >> On 5/3/2020 1:26 PM, Dave Cole wrote: >> Hello, >> I just got the new MMSSTV software, and will be running a bit of SSTV. SSTV >> is 100% duty cycle. >> Initial testing here indicates no power level is safe... At 150 watts the >> KPA500 reaches 70C pretty fast, in under two minutes, and 70C is my upper >> limit for testing... At 500 watts it reaches 70C in about the same time... >> Can I assume the amp is not the most efficient thing in the world at 200 >> watts? >> If the KPA500 can't deal with 100% duty cycle, for two minutes, how does the >> K3 deal with 100 watts for two minutes, at 100% duty cycle? > ______________________________________________________________ > 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]
