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Re: [RFI] Sudden Computer Racket

To: rfi@contesting.com
Subject: Re: [RFI] Sudden Computer Racket
From: Terry Dunlap <terry@kk6t.com>
Date: Mon, 28 Jun 2010 11:29:25 -0700
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>
I'm getting ready to install a home theater system.  I know that at the 
very least, I will need to put ferrite chokes on all the speaker wires.  
Where are folks finding the best price for Type 31 cores?

73 de Terry KK6T


On 6/27/2010 11:46 AM, Jim Brown wrote:
> On Sun, 27 Jun 2010 11:04:20 -0500, K4RO Kirk Pickering wrote:
>
>    
>> The problem is compounded by the cables
>> and equipment plugged into the Delta 1010, which act as antennas.
>>      
> Hi Kirk,
>
> You can greating reduce the radiation from those antennas with suitable
> ferrite chokes tuned to the bands where you hear the trash. See my RFI
> tutorial for specifics. This won't help radiation from the sound card
> itself due to poor shielding of the PC that it's plugged into, but it
> will help with trash from those external cables. If you haven't already
> done so, it may also help to choke other cables connected to the
> computer -- thanks to pin 1 problems, RF comes out on virtually any
> cable that leaves a box that has a clock. :)
>
> 73, Jim Brown K9YC
>
>
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