[RFI] Sudden Computer Racket
k8ri at rogerhalstead.com
Mon Jun 28 12:03:57 PDT 2010
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.
> 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 at contesting.com
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