Dave; The KPA500 will protect itself above 90C, but it will work quite well at 70C. Why do you stop at 70C?
73! Jack, W6FB > On May 3, 2020, at 1:26 PM, Dave Cole <[email protected]> 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? > > -- > 73, and thanks, > Dave (NK7Z) > https://www.nk7z.net > ARRL Volunteer Examiner > ARRL Technical Specialist > ARRL Asst. Director, NW Division, Technical Resources > ______________________________________________________________ > 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]
