[Elecraft] KPA500 - linear power supply

[george fritkin]

I can not believe hams who do not want switching mode supplies in their shack.  This precludes the use of a computer in the shack.  It also means no TVs, printers, and a host of other products.  There is also a false notion that so called linear supplies do not cause RFI.  Study Dirac's delta function and you will understand why they can.
Love my two K3s
George, W6GF



--- On Wed, 5/11/11, Al Lorona <alorona at sbcglobal.net> wrote:

From: Al Lorona <alorona at sbcglobal.net>
Subject: Re: [Elecraft] KPA500 - linear power supply
To: 
Date: Wednesday, May 11, 2011, 9:04 AM

One of the inviolable rules in the W6LX shack is: NO SWITCHING POWER SUPPLIES.

Not to make an incendiary statement, but *all* of them generate RFI. Many people 
will tell you that they've never heard RFI from their switching power supplies, 
but often it's just because they don't know what it sounds like or they haven't 
tuned across the right frequency. 


Why raise the noise floor by even half a dB if you can help it?

Nothing beats a old-fashioned, big, beefy, and quiet linear power supply.

Al  W6LX
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