[Elecraft] Successfully using a micro fan to keep K2 cool

[Ron D'Eau Claire]

It probably doesn't make much difference, but I have the fan pushing air
upward so it doesn't "fight" the air coming out of the slots at the forward
end of the heat sink driven by the small fan when it is running. 

The fan draws air in along the fins from the sides and expels it upward. I
added a 100 ohm resistor in series with the power to cut the speed of mine
to reduce the noise in a quiet room. 

Ron AC7AC

-----Original Message-----
This has been suggested many times by others.. now it is my turn to repeat 
it I guess:

I mounted a 12 volt  4 inch muffin fan in a simple enclosure and placed it 
on top of my K2 blowing downward.  I put a suitable resistor in series with 
the 12 volt supply so that the fan turned slowly and made no noise at all. 
The muffin fan ran all of the time and the little microfan in the K2 
(almost) never came on while running cw or ssb.

Don K7FJ
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