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OK results of the test are in...my office microwave totally blocks any signal to my phone. Within seconds of shutting the door the signal goes from 5 bars to "searching", no calls will connect, and as a clincher I connected a call outside the microwave and as soon as the phone was shut in the box it was disconnected.mmm - perhaps time to check your microwave
You also test putting a phone inside an all-metal biscuit-tin with a metal lid. Usually you'll find the phone still works - again because the seal around the lid is not a good quality continuous electrical contact so RF potential differences can still arise and the signals escape...If you were to scrape off all the paint, and solder the lid to the tin all round (and solder across any original seams that weren't electrically sound) then it should fully block the signals.
Quote from: techmind on 12/11/2011 22:47:29You also test putting a phone inside an all-metal biscuit-tin with a metal lid. Usually you'll find the phone still works - again because the seal around the lid is not a good quality continuous electrical contact so RF potential differences can still arise and the signals escape...If you were to scrape off all the paint, and solder the lid to the tin all round (and solder across any original seams that weren't electrically sound) then it should fully block the signals.Depends [].That should block the electric component, but it might not block the magnetic component. It shouldn't really be necessary to solder the thing shut either. There can be plenty of gaps just as long as they are not too large in relation to the wavelength.If my $8 a month T-mobile phone had any coverage where I live, I would try the experiment.