I will also echo the comments on the Antec power supplies. Used one as a
replacement a couple of years ago and the computer noise is gone.
Mike WA5POK
-----Original Message-----
From: ZR
Sent: Wednesday, July 04, 2012 11:59 AM
To: Wes Attaway (N5WA) ; jim@audiosystemsgroup.com ; topband@contesting.com
Subject: Re: Topband: Progress with ugly computer noise
Ditto on the Antec, Ive been using them on both the higher end PC's Ive
built for several years and I dont have to keep upgrading as I change or add
things. Very cool running too.
Carl
KM1H
----- Original Message -----
From: "Wes Attaway (N5WA)" <wesattaway@bellsouth.net>
To: <jim@audiosystemsgroup.com>; <topband@contesting.com>
Sent: Wednesday, July 04, 2012 12:42 PM
Subject: Re: Topband: Progress with ugly computer noise
> Unless there is something unusual about the existing power supply you
> could
> consider replacing the supply with something like a good Antec or Cooler
> Master unit. Online prices for 500W supplies are $50-$60.
>
> This assumes that you are certain the noise is coming from the power
> supply.
>
> I have never heard a peep from either of the brands mentioned above.
>
> ----------------- Wes Attaway (N5WA) -------------------
> 1138 Waters Edge Circle, Shreveport, LA 71106
> 318-797-4972 (Office) - 318-393-3289 (Cell)
> Computer Consulting and Forensics
> -------------- EnCase Certified Examiner ---------------
>
> -----Original Message-----
> From: topband-bounces@contesting.com
> [mailto:topband-bounces@contesting.com]
> On Behalf Of Jim Brown
> Sent: Wednesday, July 04, 2012 11:14 AM
> To: topband@contesting.com
> Subject: Re: Topband: Progress with ugly computer noise
>
> On 7/4/2012 6:10 AM, Bill Cromwell wrote:
>> Next I'll be getting my hands on some ferrite core materials and looking
> to see just how far I can reduce the noise.
>
> When faced with a noisy computer, the first thing I'd try (other than
> replacing the noisy supply) would be a multi-turn choke on the power
> cable, optimized (number of turns and core) for the band(s) where you're
> hearing the most noise. If noise remained, I'd next tackle the video
> cable and the printer cable. Use the graphs in Appendix One of
> http://audiosystemsgroup.com/RFI-Ham.pdf as a guide to picking the cores
> and winding the chokes.
>
> Do your fellow hams another favor -- post the brand names and/or vendors
> of both the noisy power supply and the one that fixed your problem (if
> it does). :)
>
> 73, Jim K9YC
> _______________________________________________
> UR RST IS ... ... ..9 QSB QSB - hw? BK
>
> _______________________________________________
> UR RST IS ... ... ..9 QSB QSB - hw? BK
>
>
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_______________________________________________
UR RST IS ... ... ..9 QSB QSB - hw? BK
_______________________________________________
UR RST IS ... ... ..9 QSB QSB - hw? BK
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