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Re: [RFI] Sudden Computer Racket

To: rfi@contesting.com
Subject: Re: [RFI] Sudden Computer Racket
From: Sam Morgan <k5oai.sam@gmail.com>
Date: Mon, 28 Jun 2010 15:04:56 -0500
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>
On 6/28/2010 2:03 PM, Roger (K8RI) wrote:
>
>
> On 6/28/2010 2:29 PM, Terry Dunlap wrote:
>> 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?
>>
> I think I paid $5.6Something (plus shipping) at Mouser, but that was in
> lots of 100.  I think some one had a post a while back that did better
> than that for single pieces, but I don't remember where.
>
Radio Works has some snap on mix#31 chokes:
http://www.radioworks.com/

> 73
>
> Roger (K8RI)
>> 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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>>> RFI@contesting.com
>>> http://lists.contesting.com/mailman/listinfo/rfi
>>>
>>>
>>>
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-- 
GB & 73
K5OAI
Sam Morgan
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