[RFI] Choosing a POE in a RF-rich environment

David Colburn qrv at kd4e.com
Sun May 21 19:40:51 EDT 2023


OK, cool, will put that in the mix. Thanks!

On 5/20/23 11:03 PM, F. Grant Saviers wrote:
>   An example of unexpected results with ethernet cables.  I replaced a  unshielded CAT5 with shielded CAT6 and RFI from the new cable was substantially higher.  It was inside my steel shop/shack.  Lesson: use fiber links whenever possible.
> Grant KZ1W
>
>      On Saturday, May 20, 2023 at 05:01:53 PM PDT, Greg Troxel <gdt at lexort.com> wrote:
>   
>   David Colburn <qrv at kd4e.com> writes:
>
>> If I run lines to an outdoor camera that are outside for more than
>> several feet,
>>
>> should I protect them with something like this?
>>
>> https://www.amazon.com/Tupavco-Ethernet-Protector-Gigabit-1000Mbs/dp/B00805VUD8
> There's a very deep question lurking.  We more or less take on faith
> that cables that are outside are dangerous and ones entirely inside are
> safe.  But the house is often not a sealed metal box.  I'd be interested
> in comments from people who understand better.
>
> But, it does make sense to me to treat the Ethernet cable to the camera
> the way that code requires antenna coax to be treated, as it's not so
> different from the lightning viewpoint.
>
> 73 de n1dam
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