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Re: [RFI] Noisy computer Power Supply

To: Joe <w7rkn.7@gmail.com>
Subject: Re: [RFI] Noisy computer Power Supply
From: "Kenneth G. Gordon" <kgordon2006@frontier.com>
Reply-to: kgordon2006@frontier.com
Date: Thu, 05 Jun 2014 08:07:42 -0700
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>
On 5 Jun 2014 at 6:45, Joe wrote:

> Just built a new server..to my dismay, the power supply is so noisy as to 
> negate
> *any* conversation on HF.
> 
> Before I play the `buy and return´ game, does anyone here have knowledge of
> a ***quiet*** 480 or higher, ATX, SATA capable, power supply?  (And who 
> carries
> them!)
> 
> Thanks..
> 
> Joe - W7RKN

As I mentioned in another e-mail, I always use Antech supplies.

Our middle son once built a "hot-rod" gaming computer, using the cheapest 
parts he could find.

Within only a few hours of his first firing it up, I noticed that every radio, 
from 
BC to VHF in the house was experiencing really terrible noise.

Not knowing where it originated, I used a small BC band radio with a 
loopstick in it to track the noise down.

It didn't take more than about 15 minutes to pinpoint it as coming from his 
fancy 600 watt power supply.

Upon my removing that and opening it up, I found that it was some very 
cheap Chinese-made counterfeit of a name-brand unit, in which ALL filtering 
had never been installed, although there were traces on the circuit board 
where they SHOULD have been installed.

I immediately went to our local computer-parts store and bought him a good 
Antech 550 watt job and installed that.

The noise disappeared, never to return.

I then used another son's M-91 Mosin-Nagant 7.62 X 54R to turn the 
Chinese-made POS into Swiss cheese at 50 yards.

That was MOST satisfying.

Ken W7EKB       
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