The KX3 specifications in the manual (page 54) say 5 W for digital modes. I expect the KX2 specs also list a power level.
"Supply voltage of 11 V or higher (on key-down) required for settings above 5 W. 5 W or less recommended for high-duty-cycle modes (FM, AM, DATA). Power will automatically be reduced if PA temperature or current limits are exceeded." wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Oct 26, 2017, at 6:05 AM, Barry N1EU <[email protected]> wrote: > > Thanks Tom and Don for the responses. I'll try a few 15sec FT8 xmit cycles > at 50% (7.5W) into a dummy load while monitoring PA temp. Any guidance on > what the upper safe limit is for PA temp? > > Thanks & 73, > Barry N1EU > > On Thu, Oct 26, 2017 at 8:34 AM, Don Wilhelm <[email protected]> wrote: > >> Barry, >> >> The normal recommendation is for 50% of the maximum power. >> The KX3 and the KX2 will roll back power for protection if the PA >> transistors get too hot. >> I know the KX3 rolls back to 5 watts, but I am not sure about the level >> for the KX2. >> >> 73, >> Don W3FPR >> >> >> On 10/26/2017 7:50 AM, Barry N1EU wrote: >> >>> What is the recommended max power output setting for the KX2 and for the >>> KX3 for normal FT8 use without after-market heatsink? >>> >> > ______________________________________________________________ > 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]
