[Elecraft] KPA500 - Advantage of min fan speed?

[Macy monkeys]

During a CW ragchew with a 20 wpm 400 w transmission duration of approximately 5 minutes I was being bothered by amp fan kicking into high gear towards the tailend. So I set the fan to level two; my amp is down under my desk so fan noise is minimal. Now I can enjoy a CW ragchew without the amp fan kicking into jet engine mode. 'Pre-cooling', as it were, works for me. 

John K7FD

> On Oct 3, 2019, at 10:27 AM, Andy Durbin <a.durbin at msn.com> wrote:
> 
> Some experimental data documented here - https://tinyurl.com/y3ghrdpw
> 
> Based on this data set I conclude there is no advantage to running minimum fan speed greater than zero.   That's going to surprise some people and comments on test method and test data are welcome.
> 
> 73,
> Andy, k3wyc
> 
> 
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