On 3/16/19 7:02 PM, Jim Brown wrote:
Yes, I've seen this as well. I've used nothing but Thinkpads for at
least 15 years. I've heard no noise from their power supplies, but that
may be because I always wind all wiring onto ferrite cores. [...]
As a simple example: The display of the laptop used here, is using a
clock signal falling in the 20 m amateur band. You can probably imagine
the limited possibilities to avoid noise from it.
Best wishes,
Claude
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