I have the latest revision stock heat sink and nary a thermal issue. Ever.
72, Rich Hurd / WC3T / DMR: 3142737 Grid: FN20is Bureaucracy is always in search of self-preservation. — AA7BQ > On Jun 13, 2022, at 22:47, Walter Underwood <[email protected]> wrote: > > Instructions are here. Doesn’t look difficult. > > https://ftp.elecraft.com/KX3/Mod%20Notes%20Alerts/E740254%20KX3HSMDKT%20Heat%20Sink%20Installation%20rev%20B.pdf > > <https://ftp.elecraft.com/KX3/Mod%20Notes%20Alerts/E740254%20KX3HSMDKT%20Heat%20Sink%20Installation%20rev%20B.pdf> > > wunder > K6WRU > Walter Underwood > CM87wj > http://observer.wunderwood.org/ (my blog) > >> On Jun 13, 2022, at 7:36 PM, Eric Norris <[email protected]> wrote: >> >> How difficult is it to install the later factory heatsink on an early KX3? >> >> 73 Eric WD6DBM >> >>> On Mon, Jun 13, 2022, 5:20 PM Don Wilhelm <[email protected]> wrote: >>> >>> Bill, >>> >>> If you run 12 watts on AM, FM and digital then the supplied heatsink >>> (assuming it is the newer heatsink the wraps around the bottom of the >>> KX3) then it should be adequate. >>> If you want to run the full 15 watts on those modes, I would suggest >>> adding the Pro Audio Engineering heatsink for additional cooling of the PA. >>> >>> Early versions of the heatsink had only a plate on the back which was >>> adequate for 12 watts on low duty cycle operation - Tx for 2 minutes and >>> then a RX period of about 3 minutes or more. >>> >>> The KX3 will protect itself by reducing power if it gets too hot. >>> >>> 73, >>> Don W3FPR >>> ______________________________________________________________ >>> 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] > > ______________________________________________________________ > 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]
