[Elecraft] KX3 and Heatsink

[Bill Lederer]

Thanks all for the replies.

I'll probably stick with the factory installed one, as I do have the 100
watt amp which I'll use if I need higher power.

Thanks,
w8lvn

On Tue, Jun 14, 2022 at 5:24 AM Rich WC3T <rich at wc3t.us> wrote:

> 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 <wunder at wunderwood.org>
> 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 <norrislawfirm2 at gmail.com>
> 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 <don at w3fpr.com> 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:Elecraft at mailman.qth.net
> >>>
> >>> This list hosted by: http://www.qsl.net
> >>> Please help support this email list: http://www.qsl.net/donate.html
> >>> Message delivered to norrislawfirm2 at gmail.com
> >>>
> >> ______________________________________________________________
> >> Elecraft mailing list
> >> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> >> Help: http://mailman.qth.net/mmfaq.htm
> >> Post: mailto:Elecraft at mailman.qth.net
> >>
> >> This list hosted by: http://www.qsl.net
> >> Please help support this email list: http://www.qsl.net/donate.html
> >> Message delivered to wunder at wunderwood.org
> >
> > ______________________________________________________________
> > Elecraft mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:Elecraft at mailman.qth.net
> >
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
> > Message delivered to rich at wc3t.us
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to w8lvn.9 at gmail.com



-- 
--w8lvn--