Thank you for the information you provided.
MarijeNFI wrote:
o For transportation we generally advise the police to use aluminum foil, wrapped first neatly and then randomly around the phone, or a faraday pouch, though quality varies and of course it is not possible to charge the phone during transport in this way.
Basically this confirms that (for transport purposes) "common" Faraday bags can be effectively replaced by *any* integral metallic shielding, not completely unlike the result of this simple experiment:
http://www.scienceoffcenter.org/science/462-cell-phone-faraday-cage
and that the "real issue" is the laboratory room/environment where you take the handy out of the tin/metal protection (to inspect, copy, etc.).
I see very little issues in having a "proper thickness" tinbox, similar to these (examples):
http://www.asia.ru/en/ProductInfo/488941.html
http://www.indiamart.com/darshanmetalindustries/small-case-with-hinge.html
http://www.indiamart.com/darshanmetalindustries/aluminium-sheet-metal-product.html
with some foam in it to have not the handy touch the tin and/or "rattle too much" inside it and have inside it a "universal" battery pack, not completely unlike these (example):
http://www.cellphoneshop.net/backup.html
http://www.voltaicsystems.com/offgrid-battery.shtml
And - this way - have an economical enough "evidence carrying solution", safe from the event of the battery discharging during transportation and also safer than a faraday bag (from the perspective of mechanical damages during transportation).
So, the question remaining open could be "how thick must the tin be?"
What if one plays "dumb" and uses instead a box like (still example) this one:
http://www.northerntool.com/shop/tools/product_200343628_200343628
or one of those boxes designed to house (also) RF components?
Examples:
http://www.rittal.com/com-en/product/show/variantdetail.action?categoryPath=/PG0001/PG0002SCHRANK1/PG0003SCHRANK1/PRO0019SCHRANK1&productID=1554500
http://www.rittal.com/com-en/product/list/variations.action?categoryPath=/PG0001/PG0002SCHRANK1/PG0003SCHRANK1/PG0011SCHRANK1/PRO0009SCHRANK1&productID=PRO0009
http://www.ce-tek.co.uk/cea-series-p-129.html
This one (which is a specific Forensic solution):
http://www.rfshieldbox.com/ste2200f.html
http://www.rfshieldbox.com/datasheets/STE2200F.pdf
Reaches:
Quote::
Isolation:
o -100dB @ 1GHz
o -90dB @ 3GHz
o -80dB @ 6GHz
with .90/.125" thickness.
Additionally (or alternatively) one could use fabrics like (examples):
http://www.lessemf.com/fabric.html#2272
http://www.lessemf.com/fabric.html#259
jaclaz
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