Re: [RFI] 160 meter noise at W9RE tracked down to neighbors Comcast Cable Box / Power Supply

[Jim Brown <jim@audiosystemsgroup.com>]

On 2/23/2020 12:22 AM, Don Kirk wrote:
> They are now going to work with Comcast and Mike to find a solution as a
> power line choke made with a number 31 material Toroid core did not reduce
> the RFI.
Don (and Mike),

Every cable connected to the box can be an antenna so it needs a choke. 
I'd start with the coax and power. Use the guidelines in the chasing 
noise app note below and the new HF choke cookbook, depending on the 
size of the cable you're choking and the frequency(ies) that are 
bothering you. See Fig 2 on page 2 and the associated discussion.
http://k9yc.com/KillingReceiveNoise.pdf

73, Jim K9YC
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