[Elecraft] KX2 Safe Operating PA Temperature

[Mooneer Salem]

FWIW, my KX3 handles 15 watts digital with no issues as far as I can tell.
I did the temperature compensation and have a third party heatsink, though.
I haven't looked too much at third party heatsinks for the KX2 but I
imagine I'd probably want to follow that 50% advice even with one installed
simply due to its physical size.

-Mooneer K6AQ

On Thu, Mar 26, 2020, 10:47 PM Joan via Elecraft <elecraft at mailman.qth.net>
wrote:

> The KX2 will automatically fold back its power (responding to temperature)
> to prevent thermal runaway or damage to its finals
>
> That being said, it is routinely recommended that when running any 100%
> duty cycle mode (e.g. typical digital text modes or FM Phone) one reduces
> RF output to 50% of rated output
>
> 73 de KX2CW
> Joan
>
> Darmok and Jalad at Tanagra, said Piglet.
> Shaka, when the walls fell, said Pooh.
>
> > On Mar 26, 2020, at 18:09, Steve Anness <steve at kj5t.net> wrote:
> >
> > This question was posed last October by another on the reflector in
> regards
> > to the KX3 but does not look like there was a response.  I had posed the
> > question once to Elecraft support and believe my email got lost in the
> > fray.  When I posted the question to Elecraft support it was a month
> after
> > I received my KX2 and I was running 10 watts with it and it had gotten up
> > to 61C which is what prompted the question.
> >
> > I have been running FT8 at around 5 watts recently and I see it getting
> up
> > to 51C.
> >
> > At what point should I stop operating and let it cool down?  I love my
> KX2
> > and don't want to damage it.  I do know that these are used in fields by
> > many so perhaps I am just being paranoid.
> >
> > 73 de KJ5T
> >
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