Makes you wonder how K3/10 users fair running high duty cycle modes at full output. I’ve replaced two sets of LPF drivers running 10W WSJT on my K3/100. No more! Now I advance the power until the amplifier engages (~12W). Hopefully this reduces driver dissipation.
Dennis, K7FL > On Nov 21, 2019, at 5:15 PM, dgb <[email protected]> wrote: > > Thanks for the good info Keith - I quit using 12w yrs ago as one E'craft > tech told me after the 1st one blew. > > Also heard from another that I could turn the fans on all the time which > should help as normally they are only on when you go to 13w and up. > > Will play with them - t u 73 Dwight NS9I > >>> On 11/21/2019 4:04 PM, Keith Trinity WE6R wrote: >> You can play with the Config Menu watt meter calibration high and low >> numbers to get the switch-over point different. >> IE where the Low power amp (LPA) switches to 100 amp (KPA3). This happens at >> 12W "indicated". >> The two Calibration numbers are for all bands! >> So; Go into config menu WMTR LP (below 12W) or HP (above 12W). (note 6 >> meters switches at 8W)! >> Make a note of both numbers so you can put them back! >> Extreme numbers to get the KPA3 to click in at lower actual power levels >> would be to set both for 180 (max). >> You will have to use an external watt-meter to see what is going on as the >> K3 internal watt-meter readout is all out of calibration now!! >> I just played with a radio and it switches over at about 7 watts with both >> numbers at 180 >> Have fun! >> Keith WE6R >> ______________________________________________________________ >> 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: ______________________________________________________________ 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]
