Trent W. Buck wrote:
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So work out what the wavelength is for 3G or LTE or whatever, get mesh of the appropriate gauge, fold it in half and sew it together. There are two issues here: 1/ We established that aluminium foil works as a faraday-bag ;( even a single layer) and chip packets don't; by simply ringing the same phone first unwrapped and then unwrapped to see if it answered. -empirically it might be better if a simpler more robust test could be designed which by-passed cell phone technology; eg.some kind of radio-wave power meter in roughly the range of mobile phones? 2/ I'll keep the fine woven metal mesh (I assume that is what you proposed ?)idea ;as a fall back ; because I am still thinking of a 'bag'; after all a 0.6mm Al metal box would obviously also work
............ I doubt spotlight is hipster enough to stock something like that, but you could always call and find out. Well ready made bags from the fabric with an integral metal mesh seem to be available on eBay; Perhaps a fine chain-maille would also work ?
Further:
| A booster bag (shopping bag lined with aluminium foil) [...] is | often used by shoplifters to steal RFID-tagged items.^[4]
...sounds like a solution you can test without any special equipment, by getting off the sofa and walking into the kitchen. Note the "booster bag" article further clarifies that multiple layers of foil are apparently used. Well I'm merely avoiding embarrassment; not arrest !
The Talk:Faraday_cage article also mentions people testing cellphone reception from within an (inactive) microwave oven's faraday cage; this may be a useful reference point.
https://duckduckgo.com/lite?q=cell+phone+faraday+cage They seem very confused at duckduckgo; ddg.gg is a search engine -- like google except
http://dontbubble.us and http://donttrack.us
I'm not enthusiastic about them,................snip thanks I'll have a look; regards Rohan McLeod