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

[Bill Coleman]

On May 27, 2009, at 1:24 PM, Ron D'Eau Claire wrote:

> Good grief! How cool do you want to keep the K2?
>
> ...
>
> I have used a 4" square muffin fan sitting in rubber feet on top of  
> the K2
> running at a slow speed, not to keep it any cooler but to avoid the  
> noisy
> little fan on the back from running.

If you want to run RTTY or other high-duty cycle modes with more than  
about 25 watts for any length of time, you need some supplemental  
cooling for the K2. A muffin fan like you've described would be perfect.

I used a muffin fan much like yours for a while, and then I broke one  
of the blades and had to replace it. The replacement is a 2 1/2"  
muffin fan mounted the same way. I've been able to run 50 watts RTTY  
through many contests with no ill effects.


Bill Coleman, AA4LR, PP-ASEL        Mail: aa4lr at arrl.net
Web: http://boringhamradiopart.blogspot.com
Quote: "Not within a thousand years will man ever fly!"
             -- Wilbur Wright, 1901