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From: Claude F. <Cla...@ba...> - 2019-03-17 06:23:40
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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 |