[Elecraft] PA Temp

[Eric Swartz - WA6HHQ, Elecraft]

We will let the heatsink get up to 85C before dropping the KPA3 
off-line, that still has plenty of safety margin for the transistors.

40-42C is actually on the cool side for heavy usage. But it never hurts 
to keep it cool if you don't mind the added fan noise. Fortunately the 
K3's dual fans are pretty quiet even at the higher speeds.

73, Eric   WA6HHQ


hank k8dd wrote:
> How hot does your K3/100 PA run?  
> And how hot is safe?
>
> I was sitting in a pileup at 90 watts and watching the PA Temp - it got up to around 41 or 42 C (about 100 F) so I turned the fan up a notch or two and it cooled right back down to around 20 C (70 F).
>
>