Completely isolating a mobile phone

[Man-wai Chang]

I threw it into a tin can then invert it. It still rang when I dialed
its number.

Must I use aluminium foil? Why does Al make a difference?

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[JW]

I threw it into a tin can then invert it. It still rang when I dialed
its number.

Must I use aluminium foil? Why does Al make a difference?

Try putting it into a microwave oven. Just don't turn on the oven.

 

[Man-wai Chang]

Must I use aluminium foil? Why does Al make a difference?

Try putting it into a microwave oven. Just don't turn on the oven.

That destroyed the phone, not stopping signals to reach it!

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[JW]

^^^^^^^^^^^^^^^^^^^^^^^^^^^^

That destroyed the phone, not stopping signals to reach it!

Please read what I wrote again for context.

 

[Sylvia Else]

Putting head in microwave oven is more permanent cure for mind control rays.

He'll need to overcome the safety cut-out that the government requires
to be installed to prevent people escaping mind-control rays that way.

Sylvia.

 

[Man-wai Chang]

about -102dBm. In order to stop the phone from ringing, you need only

about 22dB of isolation. Since the microwave oven shielding is 32dB
better, which is 1400 times better, the microwave oven does quite well
at blocking cell phone signals.
....
don't want to get into). The handset has a sensitivity of about
-104dBm, requiring an isolation of 84 dB to completely block the
...

Thanks. Very detailed...


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[Man-wai Chang]

Try putting it into a microwave oven. Just don't turn on the oven.

^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Please read what I wrote again for context.

Sorry for missing the last part and for my first impression about an
oven (always used to cook things).

OH well, I don't use microwave oven. It's too dangerous.

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[Man-wai Chang]

In a tin can (tea can 2x2x3") fully closed: no reception

Overlapping lid only 2 mm open: reception

I see...

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[Man-wai Chang]

Wrap in two layers of 1 inch wide copper tape with conductive adhesive

from 3M Corp. Competely enclose.

Do I need to ground the packing?

Looking up "copper tape" in Amazon, expensive stuff!

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[Man-wai Chang]

Because aluminum is known to block the government mind control rays

that are forcing you to post such drivel. With an aluminum foil hat,
you will be safe from cell phone radiation and mind control rays.

Could I use the bags for potato chips? How many?

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[Man-wai Chang]

Because aluminum is known to block the government mind control rays

that are forcing you to post such drivel. With an aluminum foil hat,
you will be safe from cell phone radiation and mind control rays.
<http://www.instructables.com/id/Aluminum-Foil-Hat/>

I wonder whether an Al hat could stop psychic attacks? Psychic attacks
and/or magic are EM-waves as well?

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[Sylvia Else]

Some TV drama showed someone jamming plastic forks in the interlock catch
slots so it worked with the door open

Sheesh - talk about irresponsible broadcasting.

Sylvia.

 

[Sylvia Else]

Had to test it
In a tin can (tea can 2x2x3") fully closed: no reception
Overlapping lid only 2 mm open: reception
Microwave: no reception

Tony

How did you check that you can hear the phone ring inside the completely
closed can?

Sylvia.

 

[Sylvia Else]

I thought it should be obvious. The can rattles like hell when the
vibrator goes off

Tony

Hmm... OK, I'll give you that one. I don't use mobile phones much -
perhaps it shows.

Sylvia.

 

[Man-wai Chang]

What you need is a bucket of water.

I wanna shield it from RF, not destroying it.


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