[Elecraft] KX2 Safe Operating PA Temperature

[Walter Underwood]

KX2 manual, page 27: "5.0 watts or lower is recommended in all data modes. The KX2 will reduce power, if necessary, to maintain a safe operating temperature." 

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)

> On Mar 26, 2020, at 10:45 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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