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) ; j...@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)" <wesatta...@bellsouth.net> To: <j...@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-boun...@contesting.com > [mailto:topband-boun...@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 > > > ----- > No virus found in this message. > Checked by AVG - www.avg.com > Version: 10.0.1424 / Virus Database: 2437/5110 - Release Date: 07/04/12 > _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK