I think you can run 100 Watts. You might use the temp monitor on lcd display and watch PA TEMP. If it starts getting close to 70 - 80 degrees C it’s time to take a break.
Many manually set fans to level 2 and just let them run. If the radio gets too hot it will cut back the power in self protection. Don’t be afraid, the K3 is rugged and is made to not need coddling(so). Sent from my iPhone ...nr4c. bill > On May 22, 2020, at 7:05 PM, Eric KG6MZS <[email protected]> wrote: > > Hello All, > > I’ve searched the reflector's archives and haven’t found anything on this, so > here goes. > > I have an aging K3/1000 (sn 3045) and I wish to preserve its operating life. > Up until now I’ve mostly operated in SSB and BPSK. Recently I’ve been > exploring some 100% duty cycle modes and I am wondering what would be a > prudent power level for these modes. Or perhaps there is a temperature limit > that should be observed on the KPA3’s heat sink? > > Suggestions? > > TIA, > Eric Fitzgerald > KG6MZS > > ______________________________________________________________ > 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]
