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#1
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Faraday cages
I want to turn my trailer into a large Faraday cage. The outside walls &
roof are tin. How much foil do I need inside on the floors/walls & ceilings in order to get a true Faraday cage? .. Christopher A. Young Learn about Jesus www.lds.org .. |
#2
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Faraday cages
On 8/30/2013 11:07 PM, Stormin Mormon wrote:
I want to turn my trailer into a large Faraday cage. The outside walls & roof are tin. How much foil do I need inside on the floors/walls & ceilings in order to get a true Faraday cage? . Christopher A. Young Learn about Jesus www.lds.org . Just make sure everything is electrically connected to everything else and you're golden. If the floor is non-metallic you might need to do something there... nate |
#3
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Faraday cages
On 8/30/2013 8:18 PM, Nate Nagel wrote:
On 8/30/2013 11:07 PM, Stormin Mormon wrote: I want to turn my trailer into a large Faraday cage. The outside walls & roof are tin. How much foil do I need inside on the floors/walls & ceilings in order to get a true Faraday cage? . Christopher A. Young Learn about Jesus www.lds.org . Just make sure everything is electrically connected to everything else and you're golden. If the floor is non-metallic you might need to do something there... nate Are you going to use battery power? Are there any wires going from inside to outside? Any wiring for lights, etc. Will have to be filtered or else you have defeated the cage. Any windows? Any air vents? Are you trying to avoid static electricity or are you trying to contain rf energy? A Faraday cage is not a trivial project. Paul |
#4
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Faraday cages
Paul Drahn wrote :
On 8/30/2013 8:18 PM, Nate Nagel wrote: On 8/30/2013 11:07 PM, Stormin Mormon wrote: I want to turn my trailer into a large Faraday cage. The outside walls & roof are tin. How much foil do I need inside on the floors/walls & ceilings in order to get a true Faraday cage? . Christopher A. Young Learn about Jesus www.lds.org . Just make sure everything is electrically connected to everything else and you're golden. If the floor is non-metallic you might need to do something there... nate Are you going to use battery power? Are there any wires going from inside to outside? Any wiring for lights, etc. Will have to be filtered or else you have defeated the cage. Any windows? Any air vents? Are you trying to avoid static electricity or are you trying to contain rf energy? A Faraday cage is not a trivial project. Paul Screened Rooms are a whole industry. There are filters for air, water, electricity and whatever you can AFFORD. :-? -- John G |
#5
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Why use aluminum foil that's going to be opaque.
You can use a transparent material, like aluminum window screen mesh, as long as the spaces in the mesh are small compared to the wavelength of the electromagnetic radiation you're wanting to block. That way, you can still enjoy natural light inside your trailer and look out the window to see if it's raining while still being able to block all Sunday morning Evangelical Christian radio and TV shows. I have a Julio filter on my sound system's tuner. Whenever anything by Julio Iglesius comes on, it automatically changes the station. |
#6
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Faraday cages
On 8/30/2013 10:07 PM, Stormin Mormon wrote:
I want to turn my trailer into a large Faraday cage. The outside walls & roof are tin. How much foil do I need inside on the floors/walls & ceilings in order to get a true Faraday cage? Heck, use electrically conductive paint then aluminum duct tape over all the cracks then grounded to everything else. Of course aluminum screen for the windows also wired to the other shielding material. ^_^ TDD |
#7
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Faraday cages
"Stormin Mormon" wrote in message ... I want to turn my trailer into a large Faraday cage. The outside walls & roof are tin. How much foil do I need inside on the floors/walls & ceilings in order to get a true Faraday cage? . Christopher A. Young Learn about Jesus www.lds.org . All you needi s one of these http://en.wikipedia.org/wiki/Tinfoil_hat It will prevent any ungodly thoughts from enetering your brain. |
#8
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Faraday cages
On Saturday, August 31, 2013 12:33:18 AM UTC-4, The Daring Dufas wrote:
On 8/30/2013 10:07 PM, Stormin Mormon wrote: I want to turn my trailer into a large Faraday cage. The outside walls & roof are tin. How much foil do I need inside on the floors/walls & ceilings in order to get a true Faraday cage? Heck, use electrically conductive paint then aluminum duct tape over all the cracks then grounded to everything else. Of course aluminum screen for the windows also wired to the other shielding material. ^_^ TDD I think using a colander on his head, or a tin foil hat would be easier. He's likely trying to keep the guvmint from reprogramming him. |
#9
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Faraday cages
Can you still get metal collanders?
.. Christopher A. Young Learn about Jesus www.lds.org .. On 8/31/2013 9:36 AM, wrote: I think using a colander on his head, or a tin foil hat would be easier. He's likely trying to keep the guvmint from reprogramming him. |
#11
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Faraday cages
On 08-31-2013 01:12, harryagain wrote:
All you needi s one of these http://en.wikipedia.org/wiki/Tinfoil_hat It will prevent any ungodly thoughts from enetering your brain. Actually, the demons know how to aim them up under the edge of the thing. -- Wes Groleau €śGrant me the serenity to accept those I cannot change; the courage to change the one I can; and the wisdom to know it's me.€ť €” unknown |
#12
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Faraday cages
On Fri, 30 Aug 2013 23:07:30 -0400, "Stormin Mormon"
wrote: I want to turn my trailer into a large Faraday cage. The outside walls & roof are tin. How much foil do I need inside on the floors/walls & ceilings in order to get a true Faraday cage? About 2sq.ft. Fold like a paper sail boat, and place over your head; shiny side out. One layer of metal, any metal, is enough BUT it has to be connected continuously around all edges. No non-conductive gaps are allowed. |
#13
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Faraday cages
On Sat, 31 Aug 2013 09:59:53 -0400, Stormin Mormon
wrote: Can you still get metal collanders? How much do you want to spend? http://www.williams-sonoma.com/searc...d-viewset=ecom |
#14
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Faraday cages
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#15
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Faraday cages
On 8/30/2013 11:56 PM, John G wrote:
Paul Drahn wrote : On 8/30/2013 8:18 PM, Nate Nagel wrote: On 8/30/2013 11:07 PM, Stormin Mormon wrote: I want to turn my trailer into a large Faraday cage. The outside walls & roof are tin. How much foil do I need inside on the floors/walls & ceilings in order to get a true Faraday cage? . Christopher A. Young Learn about Jesus www.lds.org . Just make sure everything is electrically connected to everything else and you're golden. If the floor is non-metallic you might need to do something there... nate Are you going to use battery power? Are there any wires going from inside to outside? Any wiring for lights, etc. Will have to be filtered or else you have defeated the cage. Any windows? Any air vents? Are you trying to avoid static electricity or are you trying to contain rf energy? A Faraday cage is not a trivial project. Paul Screened Rooms are a whole industry. There are filters for air, water, electricity and whatever you can AFFORD. :-? I've worked in/on places like that, they use fiber for all the comms that pass through the metal shield. Not sure how they handle the one big honkin AC power line that by necessity goes through the shield. The nice lady in the camo uniform wouldn't let me wander off and look at stuff, although other than that she was friendly and pleasant. nate |
#16
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Faraday cages
On 8/31/2013 7:05 PM, Nate Nagel wrote:
On 8/30/2013 11:56 PM, John G wrote: Paul Drahn wrote : On 8/30/2013 8:18 PM, Nate Nagel wrote: On 8/30/2013 11:07 PM, Stormin Mormon wrote: I want to turn my trailer into a large Faraday cage. The outside walls & roof are tin. How much foil do I need inside on the floors/walls & ceilings in order to get a true Faraday cage? . Christopher A. Young Learn about Jesus www.lds.org . Just make sure everything is electrically connected to everything else and you're golden. If the floor is non-metallic you might need to do something there... nate Are you going to use battery power? Are there any wires going from inside to outside? Any wiring for lights, etc. Will have to be filtered or else you have defeated the cage. Any windows? Any air vents? Are you trying to avoid static electricity or are you trying to contain rf energy? A Faraday cage is not a trivial project. Paul Screened Rooms are a whole industry. There are filters for air, water, electricity and whatever you can AFFORD. :-? I've worked in/on places like that, they use fiber for all the comms that pass through the metal shield. Not sure how they handle the one big honkin AC power line that by necessity goes through the shield. The nice lady in the camo uniform wouldn't let me wander off and look at stuff, although other than that she was friendly and pleasant. nate I saw an interesting shielded room that was empty of obsolete systems and all the lines coming through through the walls were shielded in some way but I didn't get too close look at it because I was busy. It was back in 1988 when I was working for a contractor building the mission control center for the SDI (Star Wars) program at The Kwajalein Missile Range now known as Ronald Reagan Ballistic Missile Defense Test Site. I loved it out there in The Pacific and would have stayed as long as I could but left because of nasty smokers who were running things. I doubt that's happening these days because inhaling the byproducts of combustion to get a drug albeit legal and exposing others to the poison some must have a regular intervals has become socially unacceptable. I couldn't think of going back because age and disability have caught up with me but damn, I miss the place and the island lifestyle. ^_^ https://en.wikipedia.org/wiki/Kwajalein_Atoll https://en.wikipedia.org/wiki/Ronald...ense_Test_Site https://tinyurl.com/mx93bxj TDD |
#17
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Faraday cages
On Sat, 31 Aug 2013 17:05:34 -0700, Nate Nagel
wrote: ...snip... I've worked in/on places like that, they use fiber for all the comms that pass through the metal shield. Not sure how they handle the one big honkin AC power line that by necessity goes through the shield. The nice lady in the camo uniform wouldn't let me wander off and look at stuff, although other than that she was friendly and pleasant. nate four ways: 1. for 'normal' screen rooms, use tubularly shaped [usually] RFI/EMI AC line filters 2. for decent separation, use isolation-type transformer with primary on one side of boundary and secondary on second side of boundary and filter both boundary and lines to your heart's content. 3. for really extreme, use relatively small diameter, non-conductive shaft to transfer energy via motor driving a generator. the rod goes through a tube that is more than twice as long as diameter and get decent shielding. 4. for almost complete, fueled generator, with 'air' flow over broad areas through those hexagonal [beehive-looking] screen filters |
#18
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Faraday cages
"Stormin Mormon" wrote in message ... I want to turn my trailer into a large Faraday cage. The outside walls & roof are tin. How much foil do I need inside on the floors/walls & ceilings in order to get a true Faraday cage? . Christopher A. Young Learn about Jesus www.lds.org . Chris I don't know what you trying to do and I believe it is not for your self; However trailer can be made very easily to block RFI, EMI, but as they say money makes world go around. For inside get aluminum sheeting 4'x8' overlap ˝' to 1' and screw it together, Doors you most use braided heavy cooper wire to ground all doors next to hinges. Power coming in can be done by grounding bank of capacitors with different range of capacity in order to cover broad range of frequencies on outside wall and inside, wires should go through metal pipe from connecting box outside to connecting box inside, also you can purchase Ferrite Core Noise Suppressor EMI RFI Clip Cable Filters with selective frequency that will limit interference with in their range, again same hook up precaution should be taking as with capacitors and both can be use spaced some what apart for better cleaning.. Good luck Tony --- news://freenews.netfront.net/ - complaints: --- |
#19
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Faraday cages
On Thu, 26 Sep 2013 10:13:34 -0700, Tony944 wrote:
...snip... However trailer can be made very easily to block RFI, EMI, but as they say money makes world go around. For inside get aluminum sheeting 4'x8' overlap ½' to 1' and screw it together, Doors you most use braided heavy cooper wire to ground all doors next to hinges. Power coming in can be done by grounding bank of capacitors with different range of capacity in order to cover broad range of frequencies on outside wall and inside, wires should go through metal pipe from connecting box outside to connecting box inside, also you can purchase Ferrite Core Noise Suppressor EMI RFI Clip Cable Filters with selective frequency that will limit interference with in their range, again same hook up precaution should be taking as with capacitors and both can be use spaced some what apart for better cleaning.. Good luck Tony --- news://freenews.netfront.net/ - complaints: --- RFI, yes. EMI, no. probably up passed 100kHz magnetic fields will 'punch' right through that aluminum sheeting like it's barely there. |
#21
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Faraday cages
Someone out in the ether has been spoofing me.
No worries, s/he is actually funnier than I am. Making me look good. .. Christopher A. Young Learn about Jesus www.lds.org .. On 9/26/2013 1:13 PM, Tony944 wrote: Chris I don't know what you trying to do and I believe it is not for your self; However trailer can be made very easily to block RFI, EMI, but as they say Good luck Tony |
#22
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Faraday cages
"Tony944" wrote in message ... "Stormin Mormon" wrote in message ... I want to turn my trailer into a large Faraday cage. The outside walls & roof are tin. How much foil do I need inside on the floors/walls & ceilings in order to get a true Faraday cage? . Christopher A. Young Learn about Jesus www.lds.org . Chris I don't know what you trying to do and I believe it is not for your self; However trailer can be made very easily to block RFI, EMI, but as they say money makes world go around. For inside get aluminum sheeting 4'x8' overlap ˝' to 1' and screw it together, Doors you most use braided heavy cooper wire to ground all doors next to hinges. Power coming in can be done by grounding bank of capacitors with different range of capacity in order to cover broad range of frequencies on outside wall and inside, wires should go through metal pipe from connecting box outside to connecting box inside, also you can purchase Ferrite Core Noise Suppressor EMI RFI Clip Cable Filters with selective frequency that will limit interference with in their range, again same hook up precaution should be taking as with capacitors and both can be use spaced some what apart for better cleaning.. Good luck Tony First question is -- are you trying to keep the RF in question inside or the outside stuff from getting in? It also helps to know the frequency. Tomsic |
#23
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Faraday cages
Keeping out. Every few days, is the frequency.
The CIA has been vibrating me, and making me insane. Which is why I keep eating the purple spots on my nose. .. Christopher A. Young Learn about Jesus www.lds.org .. On 9/26/2013 4:03 PM, Tomsic wrote: First question is -- are you trying to keep the RF in question inside or the outside stuff from getting in? It also helps to know the frequency. Tomsic |
#24
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Faraday cages
On Thu, 26 Sep 2013 17:04:30 -0400, Stormin Mormon
wrote: Keeping out. Every few days, is the frequency. The CIA has been vibrating me, and making me insane. Which is why I keep eating the purple spots on my nose. What's the frequency, Kenneth? |
#25
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Faraday cages
HA Ha he he F u n n y
"Stormin Mormon" wrote in message ... Keeping out. Every few days, is the frequency. The CIA has been vibrating me, and making me insane. Which is why I keep eating the purple spots on my nose. . Christopher A. Young Learn about Jesus www.lds.org . On 9/26/2013 4:03 PM, Tomsic wrote: First question is -- are you trying to keep the RF in question inside or the outside stuff from getting in? It also helps to know the frequency. Tomsic --- news://freenews.netfront.net/ - complaints: --- |
#26
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Faraday cages
On Friday, August 30, 2013 10:07:30 PM UTC-5, Stormin Mormon wrote:
I want to turn my trailer into a large Faraday cage. The outside walls & roof are tin. How much foil do I need inside on the floors/walls & ceilings in order to get a true Faraday cage? . Christopher A. Young Learn about Jesus www.lds.org . |
#27
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Faraday cages
On Friday, August 30, 2013 10:07:30 PM UTC-5, Stormin Mormon wrote:
I want to turn my trailer into a large Faraday cage. The outside walls & roof are tin. How much foil do I need inside on the floors/walls & ceilings in order to get a true Faraday cage? . Christopher A. Young Learn about Jesus www.lds.org . The scary part is the Navy Yard shooter talked about ELF (extremely low frequencies) but those waves are difficult to launch unles you have huge antennas, hundreds of feet in length. I assume Normin is trolling, or he would have given us enuf information to give him some really practical advice. No one mentioned aluminum-clad sheetrock for wall panels. We have used that in some special installations where the transmitters on trains coming into the switching yard were causing interference to colocated telephone equipment, Sealed the seams of the sheet rock with 4" wide copper tape that had conductive adhesive to hold it in place. Worked like a charm. But those frequencies were in the MHZ range, not ELF. Conductive paint will give some attenuation, but as soon as there is a seam or any break in the paint surface, you lose most of the shielding effectiveness. As an EMC engineer for 35+ years at Bell Labs and past president of the IEEE EMC Society, I have seen just about anything (and everything) people have proposed to block radio waves. Solid metal surfaces with no break or seams is best, but at low frequencies, you also need something that is a magnetic material like iron or steel or some exotic metal like mumetal to block radio waves. |
#28
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Faraday cages
My spoof is starting things on my behalf.
I'm responding with humor. .. Christopher A. Young Learn about Jesus www.lds.org .. On 9/26/2013 10:03 PM, wrote: On Friday, August 30, 2013 10:07:30 PM UTC-5, Stormin Mormon wrote: I want to turn my trailer into a large Faraday cage. The outside walls & roof are tin. How much foil do I need inside on the floors/walls & ceilings in order to get a true Faraday cage? . Christopher A. Young Learn about Jesus www.lds.org . The scary part is the Navy Yard shooter talked about ELF (extremely low frequencies) but those waves are difficult to launch unles you have huge antennas, hundreds of feet in length. I assume Normin is trolling, or he would have given us enuf information to give him some really practical advice. No one mentioned aluminum-clad sheetrock for wall panels. We have used that in some special installations where the transmitters on trains coming into the switching yard were causing interference to colocated telephone equipment, Sealed the seams of the sheet rock with 4" wide copper tape that had conductive adhesive to hold it in place. Worked like a charm. But those frequencies were in the MHZ range, not ELF. Conductive paint will give some attenuation, but as soon as there is a seam or any break in the paint surface, you lose most of the shielding effectiveness. As an EMC engineer for 35+ years at Bell Labs and past president of the IEEE EMC Society, I have seen just about anything (and everything) people have proposed to block radio waves. Solid metal surfaces with no break or seams is best, but at low frequencies, you also need something that is a magnetic material like iron or steel or some exotic metal like mumetal to block radio waves. |
#29
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Faraday cages
" wrote:
On Friday, August 30, 2013 10:07:30 PM UTC-5, Stormin Mormon wrote: I want to turn my trailer into a large Faraday cage. The outside walls & roof are tin. How much foil do I need inside on the floors/walls & ceilings in order to get a true Faraday cage? . Christopher A. Young Learn about Jesus www.lds.org . The scary part is the Navy Yard shooter talked about ELF (extremely low frequencies) but those waves are difficult to launch unles you have huge antennas, hundreds of feet in length. I assume Normin is trolling, or he would have given us enuf information to give him some really practical advice. No one mentioned aluminum-clad sheetrock for wall panels. We have used that in some special installations where the transmitters on trains coming into the switching yard were causing interference to colocated telephone equipment, Sealed the seams of the sheet rock with 4" wide copper tape that had conductive adhesive to hold it in place. Worked like a charm. But those frequencies were in the MHZ range, not ELF. Conductive paint will give some attenuation, but as soon as there is a seam or any break in the paint surface, you lose most of the shielding effectiveness. As an EMC engineer for 35+ years at Bell Labs and past president of the IEEE EMC Society, I have seen just about anything (and everything) people have proposed to block radio waves. Solid metal surfaces with no break or seams is best, but at low frequencies, you also need something that is a magnetic material like iron or steel or some exotic metal like mumetal to block radio waves. Radio waves are effectively blocked with the cage, if it's solid. I got some buildings built with aluminum backed drywall. At least I informed some people that the local tv tower created problems, which was about 500 feet away. The building engineers specified the details. Metal studs were also used to tie them together. It was only partially effective for the rooms around the perimeter of the 13 story building. Windows and doorways allowed penetration. The interior rooms were pretty good. The channel 13 PBS station later converted to digital, and interference was minimal. There were still tons of other services on the tower. Most of the faraday cages I worked with, were mainly for 60 hz electrostatic noise. A motorized device, or other high current device, still penetrates the cage with magnetics. That aluminum drywall would be pretty good for moisture control. Greg |
#30
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Faraday cages
All those people in uniforms. Scares me,
just like the mail man. .. Christopher A. Young Learn about Jesus www.lds.org .. On 9/26/2013 7:58 PM, wrote: On Thu, 26 Sep 2013 17:04:30 -0400, Stormin Mormon wrote: The CIA has been vibrating me, and making me insane. Stay away from the Navy Yard |
#31
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Faraday cages
On Friday, August 30, 2013 11:07:30 PM UTC-4, Stormin Mormon wrote:
I want to turn my trailer into a large Faraday cage. Steal your neighbors steel garbage cans and put your junk in them. |
#32
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Faraday cages
That won't help with the CIA vibrating me. Hey! Now I know... you work
for the CIA and you're out to get me? .. Christopher A. Young Learn about Jesus www.lds.org .. On 9/27/2013 8:44 AM, Thomas wrote: On Friday, August 30, 2013 11:07:30 PM UTC-4, Stormin Mormon wrote: I want to turn my trailer into a large Faraday cage. Steal your neighbors steel garbage cans and put your junk in them. |
#33
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Faraday cages
Navy yard shooter should be hang by his balls never mine low frequency that
is lot of bull **** wrote in message ... On Friday, August 30, 2013 10:07:30 PM UTC-5, Stormin Mormon wrote: I want to turn my trailer into a large Faraday cage. The outside walls & roof are tin. How much foil do I need inside on the floors/walls & ceilings in order to get a true Faraday cage? . Christopher A. Young Learn about Jesus www.lds.org . The scary part is the Navy Yard shooter talked about ELF (extremely low frequencies) but those waves are difficult to launch unles you have huge antennas, hundreds of feet in length. I assume Normin is trolling, or he would have given us enuf information to give him some really practical advice. No one mentioned aluminum-clad sheetrock for wall panels. We have used that in some special installations where the transmitters on trains coming into the switching yard were causing interference to colocated telephone equipment, Sealed the seams of the sheet rock with 4" wide copper tape that had conductive adhesive to hold it in place. Worked like a charm. But those frequencies were in the MHZ range, not ELF. Conductive paint will give some attenuation, but as soon as there is a seam or any break in the paint surface, you lose most of the shielding effectiveness. As an EMC engineer for 35+ years at Bell Labs and past president of the IEEE EMC Society, I have seen just about anything (and everything) people have proposed to block radio waves. Solid metal surfaces with no break or seams is best, but at low frequencies, you also need something that is a magnetic material like iron or steel or some exotic metal like mumetal to block radio waves. --- news://freenews.netfront.net/ - complaints: --- |
#34
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Faraday cages
NO but my uncle "Martian" will get you!
"Stormin Mormon" wrote in message ... That won't help with the CIA vibrating me. Hey! Now I know... you work for the CIA and you're out to get me? . Christopher A. Young Learn about Jesus www.lds.org . On 9/27/2013 8:44 AM, Thomas wrote: On Friday, August 30, 2013 11:07:30 PM UTC-4, Stormin Mormon wrote: I want to turn my trailer into a large Faraday cage. Steal your neighbors steel garbage cans and put your junk in them. |
#35
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Faraday cages
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