[Elecraft] KPA100 Fan Question

[Ron D'Eau Claire]

Of course! Looking at the K2 from the front, I didn't see the holes
between the top cover and the heat sink!  "Out of sight, out of (my)
mind"...

So the air runs between the KPA100 PCB and the shield. 

An extra fan on top might be a great investment to keep the temperature
down and minimize the amount of time the little one whines away at the
back (short of a water-cooled plenum, on top of the heat sink).  That
little fan is noisy enough to be irritating even wearing phones! 

Ron AC7AC
K2 # 1289

---
Hi Ron,

The air exits the case at the top of the K2/100 at the front between the
heatsink fins. It does an excellent job of stabilizing the K2's internal
temperature.

If you still want to add auxilary cooling  a 3" fan running at half
speed placed on top of the heatsink (halfway to the rear and 2/3 to the
right) pulling air up and away fromthe heatsink works well. Putting
rubber stick on feet on the bottom of the fan will keep it in place and
space it correctly for proper air flow.

73, Eric  WA6HHQ