[Elecraft] Cooling fans

[John, KI6WX]

Kevin;
For some of my K2 power tests, I've placed a single 12V fan on the heat sink 
with 6-32 screws through the fan mounting holes to hold the fan about an 
inch above the heat sink.  The fan blows air down onto the top of the heat 
sink.  With that combination, I can run key down full power for a half-hour 
without excessive heating on the output transistors.
-John
 KI6WX

> Hello all.
>
> I'm getting my K2/100 ready for sweeps and have decided to add some aux
> cooling.
> I have a couple of 3" computer case fans and was wondering from those
> who've done the same about placement and whether blow the air onto the
> heatsink or suck it through.
>
> Thanks for your input.
>
> R. Kevin Stover
> AC0H
> K2/100 # 4684.
>