[RFI] A source of RFI

[Dave Cole]

Oh yes...  See:

http://nk7z.net/rfi-now-house-cleaning/

for a short overview of how I removed almost all of my RFI from the 
station here.

73s and thanks,
Dave
NK7Z
http://www.nk7z.net

On 05/29/2017 05:24 PM, Dave Cole wrote:
> Hi,
> I grounded the computer case to the computer ground on the motherboard,
> then the case to an actual ground buss, and the ground buss is connected
> to an actual ground.
>
> Following that I added a few mix31 ferrite's to the DVI cable for the
> monitor, one at the monitor end, and one at the computer end, and one in
> the middle...
>
> All of my computer/monitor RFI ended with those steps.
>
>
> 73s and thanks,
> Dave
> NK7Z
> http://www.nk7z.net
>
> On 05/29/2017 09:14 AM, Kenneth G. Gordon wrote:
>> Hmmm...well, yesterday, I found that a source of RFI on (at least) 40
>> meters is the desktop
>> computer sitting on my operating bench. RFI changes with changes in
>> the "scene" on the
>> screen.
>>
>> Turning off the 'pooter resulted in noise level dropping to S-1
>> (transceiver in narrow CW) on
>> selected frequencies.
>>
>> I'm not sure at this point how to fix this, but I'll be working on it.
>>
>> What brought it to my attention was a weak but steady carrier on 7053,
>> which would
>> disappear when I changed to a different piece of software on the 'pooter.
>>
>> Sigh.... :-(
>>
>> If it isn't one thing, its another.
>>
>> Ken W7EKB
>>
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