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Old 16-09-2011, 18:00   #16
Waldo Pepper
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Re: laptop

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Originally Posted by Kymmy View Post
Very doubtful if they'd send harmonics all the way upto 2.4ghz

It's probably not the wifi manager but instead some sort of laptop proprietary software with form of profile that's disabling the wifi on AC
From experience of designing such things, they can radiate from DC to Xrays

It's not what they are radiating in-band. it's the cheap front ends of WiFi that can get crunched from out of band signals.
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Old 16-09-2011, 18:45   #17
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Re: laptop

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Originally Posted by Waldo Pepper View Post
From experience of designing such things, they can radiate from DC to Xrays
I agree that some of the bench supplies (or specialist supplies) can produce sproggies that high but not though from a basic laptop switch mode where it's switching at only a few Khz which means that any harmonics at 2.4Ghz is at such a low power that little if any is radiated.
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Old 17-09-2011, 12:41   #18
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Re: laptop

Quote:
Originally Posted by Kymmy View Post
Very doubtful if they'd send harmonics all the way upto 2.4ghz

It's probably not the wifi manager but instead some sort of laptop proprietary software with form of profile that's disabling the wifi on AC
You would be surprised. I have had to fault find systems where GPS circa 1570MHz was being blocked by a simple but badly laid out/designed "buck" style PWM regulator running at 150KHz. OK GPS is running at a much lower signal strength but nonetheless.

The mush these power supplies generate is pretty bad despite having a CE marking. Not to mention the mush a laptop puts out having many such devices inside.

In hindsight, I think it's more likely an issue with the network being disabled on battery as some have previously posted.
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