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How can you amplify a signal but not attenuate it?
Posted: Sat Nov 03, 2018 3:52 pm
by SFE
Just wondering why is it you can amplify a signal with something like a repeater but not attenuate it wirelessly as well? Wouldn;t the same mechanics apply?
Re: How can you amplify a signal but not attenuate it?
Posted: Sat Nov 03, 2018 6:37 pm
by jremington
Why do you think you can't attenuate a signal?
Re: How can you amplify a signal but not attenuate it?
Posted: Wed Nov 07, 2018 10:25 am
by SFE
I've heard of repeaters and devices that amplify but not ones that attenuate wirelessly I mean, not at the source. It is possible? I'm thinking of devices that claim to reduce EMF-why they claim they work, but in fact do nothing.
Re: How can you amplify a signal but not attenuate it?
Posted: Wed Nov 07, 2018 1:21 pm
by jremington
Look up "Faraday cage", which can reduce EM radiation to as close to zero as you like.
Re: How can you amplify a signal but not attenuate it?
Posted: Wed Nov 07, 2018 3:14 pm
by SFE
I understand shielding but I'm talking about devices that amplify but not attenuate a signal wirelessly.