[Elecraft] KPA-500 Running hot on 20m

[Gordon LaPoint]

Mike,
     I do a lot of RTTY and other sound card modes with my K3-KPA500 
pair.   I have the amp go to 70c sometimes, that is when the HIGHEST 
speed fan kicks in, NOT 65c.   Not a problem, many RTTY contests and 
still works fine!  The room ambient temp has a lot to do with the temp 
of the KPA500, in the summer I hit the 70c a lot more often than I do in 
the winter, when my shack is 63-65F.

Gordon - N1MGO


On 1/8/2017 7:44 PM, W0MU Mike Fatchett wrote:
> I was running the RTTY contest this weekend and expected to see higher 
> than normal temps but on 20m and maybe 15 the amp was running 65c and 
> up where the highest speed fan would come on. Generally in RTTY I 
> would up the normal fan a couple of notches and it would be fine.   I 
> was not pushing it for full output either as I was not serious in the 
> test.
>
> Nothing much has really changed here so I am a bit confused what might 
> be going on here.
>
> W0MU
>
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