[RFI] Computer (maybe just USB subsystem) shutting down

[Mike Fatchett W0MU]

Are we certain that it is an rfi issue and not a power saving "feature" 
of Windows?

W0MU

On 2/22/2024 12:23 AM, Jim Brown wrote:
> On 2/21/2024 8:03 AM, Pete Smith N4ZR wrote:
>> I'm wondering if it could be helpful, from an RFI perspective, to put 
>> another common mode choke on that cable where it enters my house.
>
> Pete and I have corresponded about this directly, so this is for 
> others reading the mail.
>
> My advice, in general, is that if everything is done right with 
> respect to grounding and bonding, is that chokes on feedlines at the 
> shack should not be needed. But I've received correspondence from hams 
> who do not have ADEQUATE chokes at the feedpoints, or that have not 
> done good grounding and bonding, that chokes on feedlines at the shack 
> help.
>
> Interconnecting cables can pick up transmitted RF from our antennas, 
> coupling that RF into equipment by the Pin One Problems that are 
> present in virtually all consumer equipment -- computers, home 
> entertainment, etc. -- and nearly all ham gear. When visiting ham 
> conventions, I have yet to see a ham transceiver that didn't have Pin 
> One Problems. Chokes CAN be necessary on these cables to prevent the 
> kind of problems Pete is having.
>
> 73, Jim K9YC
>
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