[Elecraft] Silent power supply for a K3s

[Alan Corbeth]

I have an Astron RS35 power Supply purchased in 1991.  There was a period where I didn’t use it for ten years.  Now it’s in use daily and so far it continues to be totally quiet.

Alan
K7FH

> On Jun 10, 2019, at 3:56 AM, Bill <w2blc at nycap.rr.com> wrote:
> 
> I have several Power Werx switchers and prefer them for their size over the heavy analog supplies. Fans are not a problem (actually, I hear nothing from them at all) - IF you design your radio desk for proper equipment placement. Place the power supply at your right hand - and you WILL hear noise, XFMR, fan, etc.
> 
> It is amazing what proper station design/construction can do for making silence. Open faced metal shelving and bare desktops don't cut it.
> 
> Just for grins, I put one of those Nanoxia fans in my IC-7300 and silenced it completely. Worth the few dollars and effort. No temperature changes noted. Hmmm - KPA500?????
> 
> 
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