[Elecraft] Fan for KXPA100

Bob McGraw K4TAX rmcgraw at blomand.net
Fri Aug 2 15:09:46 EDT 2019


Just curious on my part, with my K3S I ran FT-8 for about an hour making 
1 contact after another on 20M.  Power output was set to100 watts 
although the external powers meters (2 different ones) show a bit more 
than 100 watts.    Started with PA temperature at 36°C and never saw it 
go over 50°C.   The fan is on automatic so it normally is off but does 
step up in speed as the PA temp climbs. Still with that duty cycle 50°C, 
I believe is quite safe as 84°C is the cut-off limit for the PA.


73

Bob, K4TAX


On 8/2/2019 12:09 PM, MaverickNH wrote:
> Wow - yeah!
>
> Running FT8 30W my KXPA100 is psuging 55C and dropped to 35C with a 3" USB
> fan placed on top of the fins. When the shack gets cold this Winter, I may
> take the fan off again ;-)
>
> Bret/N4SRN
>
>
>
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