This has long been a problem with power supplies for IBM-compatible PCs
(and I expect, Macs as well. Open the box and you'll discover jumper
wires where it says on the PC board there should be EMI filter
components. I've gotten in the habit of just swapping out the power
input jack on these power supplies for Corcom or Qualtek units with
built-in EMI filtering.
73, Pete N4ZR
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On 9/21/2021 10:47 PM, Hare, Ed, W1RFI wrote:
I will add a caveat, and that is that just because Model A of a particular
manufacturer may be clean, Model B may not be. Also, designs change over time
and we have known manufacturers to not install filtering components.
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