KPA500 fan noise

[Arthur Nienhouse]

*/ I put a Noctua NF-A9x14 PWM  pusher fan on the inlet this helped a
bit,with a  typical over during a cw rag chew at 28 wpm delays the onset
of high speed by a couple of minutes depending on the temp in the shack.

With the big fan on the back *off* my idle temp is 31c with *no* the
helper fan, with the helper fan wired to the radio which runs when the
radio is on the idle temp is 24 c it pushes the air from the top inlet
through the unit and out the back. Noctua fans sit on soft silicone pads
no vibration no sound just moves the air along through the amp.

Its to bad a replacement fan for the KPA500 from Noctua can't be found
these are well engineered fans moving more air and quietly.

Regards
ka9zap
Art
/*
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[Clay Autery]

"Its to bad a replacement fan for the KPA500 from Noctua can't be found
these are well engineered fans moving more air and quietly"

Is the fan in the KPA500 a 92mm fan?  Noctua makes a 92x92x25 mm fan...

______________________
Clay Autery, KY5G
MONTAC Enterprises
[phone]

On 2/12/2017 2:22 PM, Arthur Nienhouse wrote:

> */ I put a Noctua NF-A9x14 PWM  pusher fan on the inlet this helped a
> bit,with a  typical over during a cw rag chew at 28 wpm delays the
> onset of high speed by a couple of minutes depending on the temp in
> the shack.
>
> With the big fan on the back *off* my idle temp is 31c with *no* the
> helper fan, with the helper fan wired to the radio which runs when the
> radio is on the idle temp is 24 c it pushes the air from the top inlet
> through the unit and out the back. Noctua fans sit on soft silicone
> pads no vibration no sound just moves the air along through the amp.
>
> Its to bad a replacement fan for the KPA500 from Noctua can't be found
> these are well engineered fans moving more air and quietly.
>
> Regards
> ka9zap
> Art

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[David Orman]

Noiseblocker does too (92x92x25), which I prefer due to color. :) I have no
idea if this is the correct size for the KPA500, I don't have one, and
can't vouch for doing the mod. BlackSilentPro would be the model I've used
in past fan replacements on switches and such. Disclaimer, I have no idea
how this will influence the thermal control of your KPA500. YMMY/mod at
your own risk. Perhaps a call to Elecraft to discuss?

On Sun, Feb 12, 2017 at 3:09 PM, Clay Autery <[hidden email]> wrote:

> "Its to bad a replacement fan for the KPA500 from Noctua can't be found
> these are well engineered fans moving more air and quietly"
>
> Is the fan in the KPA500 a 92mm fan?  Noctua makes a 92x92x25 mm fan...
>
> ______________________
> Clay Autery, KY5G
> MONTAC Enterprises
> [phone]
>
> On 2/12/2017 2:22 PM, Arthur Nienhouse wrote:
> > */ I put a Noctua NF-A9x14 PWM  pusher fan on the inlet this helped a
> > bit,with a  typical over during a cw rag chew at 28 wpm delays the
> > onset of high speed by a couple of minutes depending on the temp in
> > the shack.
> >
> > With the big fan on the back *off* my idle temp is 31c with *no* the
> > helper fan, with the helper fan wired to the radio which runs when the
> > radio is on the idle temp is 24 c it pushes the air from the top inlet
> > through the unit and out the back. Noctua fans sit on soft silicone
> > pads no vibration no sound just moves the air along through the amp.
> >
> > Its to bad a replacement fan for the KPA500 from Noctua can't be found
> > these are well engineered fans moving more air and quietly.
> >
> > Regards
> > ka9zap
> > Art
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
>

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