MacBook Air RF waves
I was wanting to know what radio frequency the wire going to my screen gives off. And another question is if the screen is turned all the way down, to black, is the computer still sending the video signal to a screen that is just dimmed all the way or is the signal cut off ?
Know they aren't typical questions and in one case might take someone who knows what they're doing with a spectrum analyzer, but thank you to anyone who might know the answers to these questions.
Is this a good question?
9 Comments
Alan - What are you really looking for here? EMI emissions? WiFi and/or Bluetooth radio spectrum signals?
by Dan
I have taken the airport/Bluetooth out. And so yes, would be curious if that is still giving off a signal somehow. But overall emissions, especially from the video signal to the screen is what I'm looking for. It is a MacBook Air only a few months old. Can't find anyone who has done those rf emission measurements. ...and thank you for the answer about screen dimming.
by Alan
Great video! What beautiful EMF. ...don't think my airbook is tempest proof. Pretty sure it's not with screen up and running, but you mention covering the external ports. Is this an area of rf leakage? Thank you again
by Alan
No, your system is TEMPEST rated with the mods. The older CRT systems just beamed signals all over the place. Basically you need a Faraday Cage to control emissions the unibody systems are as close to one as you can get.
by Dan
If this has answered your question please remember to rate (score) and mark it accepted.
by Dan
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