[Elecraft] KPA1500 - adding fans

[Richard Zalewski]

Very good info Tony.  Saves me the experiment.  I think it also shows that
the guys at Elecraft did a good job in cooling design.

Richard
*W7ZR* ex:5C5Z, CN2ZR, K2JSP, W6SBZ, W7KXR, K9ZIJ, W9KNF, W0KDF, W0MQU,
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*Be joyful in hope, patient in affliction, faithful in prayer*


On Fri, Aug 10, 2018 at 8:19 AM N2TK, Tony <tony.kaz at verizon.net> wrote:

> For the heck of it brought my KPA1500 from the basement to the shack desk.
> Ran a test with 10 CQ’s on 6M with 1K out on FT8. By the time the CQ’s were
> done the amp temp was up to about 75C. The amp is set so the fan is always
> on at #1.
> Added two 4” 110VAC fans in series to cut down the speed and noise and
> covered the exhaust holes on the top of the amp to extract air. Then I
> tried with just one 4” fan in the center running full speed. Bottom line
> there was virtually no difference in the top temp of the amp with these
> settings.
> I know, not very scientific. Just seeing if there would be a noticeable
> difference with adding fans.
> Time to move the amp back to the basement. I never hear my amps ☺
> 73,
> N2TK, Tony
>
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