Just came acrosse a budget radio frequency curtain at blockemf.com
http://www.blockemf.com/catalog/product_info.php?products_id=5072 Sounds too good to be true as it is a fraction of the price of most shielding material. Has anyone tried this? Is it worth trying? Thanks, Aline |
In a message dated 11/30/2007 10:30:35 PM GMT Standard Time,
[hidden email] writes: Just came acrosse a budget radio frequency curtain at blockemf.com LOOKS LIKE SURVIVAL BLANKET MATERIAL - HOW LARGE IS IT ? [Non-text portions of this message have been removed] |
I bought one. It is a good buy. Aluminum foil is probably much more
effective, but this is nice because it's bigger and very lightweight. It's probably great if the signal you're shielding is weak or if it's for a hallway or somewhere you won't be spending hours every day. Bill On Dec 2, 2007 3:17 AM, <[hidden email]> wrote: > In a message dated 11/30/2007 10:30:35 PM GMT Standard Time, > > [hidden email] <haikuron%40aol.com> writes: > > Just came acrosse a budget radio frequency curtain at blockemf.com > > LOOKS LIKE SURVIVAL BLANKET MATERIAL - HOW LARGE IS IT ? > > [Non-text portions of this message have been removed] > > > [Non-text portions of this message have been removed] |
I bought some of them with a grounding cord but in the lessemf.com site. I don't know if is the same curtain but at less the description is very similar. In the lessemf claim that the attenuation is 20dB and in the blockemf 40dB,... http://www.lessemf.com/plastic.html I used it to shield wireless that comes from the next room and attenuates greatly the radiation. I used the electrosmog detector MW1 to check it. I think that I need another layer of this material because I hear a small wireless sound yet and I know that the sensitivity of MW1 is around 0.03- 0.05 V/m. I have also a digital meter but I don't remember exactly the amount of radiation that was before and after the shielding (I'm thinking that went from 0.3V/m to 0.03V/m but I'm not totally sure), and at this moment I cannot measure it because they are not using wifi. Maybe if I detect that is active I can send you my digital measurements. Daniel --- In [hidden email], "Bill Bruno" <wbruno@...> wrote: > > I bought one. It is a good buy. Aluminum foil is probably much more > effective, but > this is nice because it's bigger and very lightweight. It's probably great > if the signal > you're shielding is weak or if it's for a hallway or somewhere you won't be > spending hours > every day. > > Bill > > On Dec 2, 2007 3:17 AM, <paulpjc@...> wrote: > > > In a message dated 11/30/2007 10:30:35 PM GMT Standard Time, > > > > haikuron@... <haikuron%40aol.com> writes: > > > > Just came acrosse a budget radio frequency curtain at blockemf.com > > > > LOOKS LIKE SURVIVAL BLANKET MATERIAL - HOW LARGE IS IT ? > > > > [Non-text portions of this message have been removed] > > > > > > > > > [Non-text portions of this message have been removed] > |
For microwaves there's little point in grounding it (but it could be safer
in terms of if it gets into a live outlet). BlockEMF says "40dB(100:1)". 100:1 is 20dB, so LessEMF's figure is probably the one to look at. I could believe it is 20 dB in terms of power, which means just 10 dB in terms of field strength. Bill On Dec 2, 2007 1:20 PM, danielferres <[hidden email]> wrote: > > I bought some of them with a grounding cord but in the lessemf.com site. > I don't know if is the same curtain but at less the description is > very similar. In the lessemf claim that the attenuation is 20dB > and in the blockemf 40dB,... > > http://www.lessemf.com/plastic.html > > I used it to shield wireless that comes from the next room and > attenuates greatly the radiation. I used the electrosmog detector MW1 > to check it. I think that I need another layer of this material > because I hear a small wireless sound yet and I know that the > sensitivity of MW1 is around 0.03- 0.05 V/m. > > I have also a digital meter but I don't remember exactly the amount of > radiation that was before and after the shielding > (I'm thinking that went from 0.3V/m to 0.03V/m but I'm not totally > sure), and at this moment > I cannot measure it because they are not using wifi. > Maybe if I detect that is active I can send you my digital measurements. > > Daniel > > > --- In [hidden email] <eSens%40yahoogroups.com>, "Bill Bruno" > <wbruno@...> wrote: > > > > I bought one. It is a good buy. Aluminum foil is probably much more > > effective, but > > this is nice because it's bigger and very lightweight. It's > probably great > > if the signal > > you're shielding is weak or if it's for a hallway or somewhere you > won't be > > spending hours > > every day. > > > > Bill > > > > On Dec 2, 2007 3:17 AM, <paulpjc@...> wrote: > > > > > In a message dated 11/30/2007 10:30:35 PM GMT Standard Time, > > > > > > haikuron@... <haikuron%40aol.com> writes: > > > > > > Just came acrosse a budget radio frequency curtain at blockemf.com > > > > > > LOOKS LIKE SURVIVAL BLANKET MATERIAL - HOW LARGE IS IT ? > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > [Non-text portions of this message have been removed] |
In reply to this post by alinepapille
it looks to me like its made of the same material as 'survival
blankets' that runners, mountaineers, etc use, that i've been using to help screen out RF radiation at my mum's when i visit. i've always been impressed with its screening abilities compared to tin foil, but think the plastic bit does something weird, not sure what. Would love to know what the metal is they use.... --- In [hidden email], "Aline" <haikuron@...> wrote: > > Just came acrosse a budget radio frequency curtain at blockemf.com > > http://www.blockemf.com/catalog/product_info.php?products_id=5072 > > Sounds too good to be true as it is a fraction of the price of most > shielding material. > > Has anyone tried this? Is it worth trying? > > Thanks, > Aline > |
> it looks to me like its made of the same material as 'survival
> blankets' that runners, mountaineers, etc use. Would love to know what > the metal is they use.... It is aluminum. Emil |
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