[SCCC] RF Noise

[n6cw at san.rr.com]

Wyatt,

I have fought this battle. The solution was not torroids although that helped mask the problem. The problem was the computer power supply. I am assuming this is a PC and not a laptop.

Inspecting the PS revealed that the manufacturer did not install the RF filtering components. The PS board had all the parts labeled but they were not installed. My solution was to go to the local recycle place with a screwdriver and they let me open up a stack of power supplies until I found one that had all the components and fit the PC. Think made in USA (Dell, etc). Installing the new PS eliminated all the RF noise. This option may not be available to you but if it is the PS you may not be able to eliminate the problem with ferrites. 

Another issue which has been brought up is using good quality cables in and out of your computer and around your station. It takes a lot of ferrite to tame an unshielded cable. 

Good luck.

Terry/N6CW


---- Wyatt Law <wyattlaw4 at gmail.com> wrote: 
> Hello all,
> 
> I was wondering what everyone else uses to cut down on noise. I used to
> have a problem where whenever I did CW, it would turn off the TVs in my
> house and make my PC monitor flicker. That has been fixed for a while with
> ferrite beads. The only issue that I have now is that whenever my dad's PC
> is turned on across the house, it blows out my IC-7300. It makes a ton of
> noise all over the panadapter and significantly raises the noise level.
> When the PC is turned off, the noise is gone. What could be done to stop
> this? I've read online that people wrap their cables in torrids? If so what
> size and where should I get them? I have tired different combinations of
> beads and looping the coax with no change and was wondering if anyone has
> had any success with torrid wrapping?
> 
> Thanks,
> Wyatt
> AI6V
> wyattlaw4 at gmail.com
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