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Afghan Bridge Update and Sad News
Hi Everyone.
Thanks for all the help and advice on the Bridge Project. It's currently on hold, as the FOB Mayor wants to see if we can score some honest culvert from an Engineer Unit rather than build some. Works for me. On the 12th, we lost two good men and had a third badly injured courtesy of an IED. If I've figured the time zones right. it would still have been Memorial Day back home. I have been wondering if there is any way to inductively couple enough current to prematurely detonate these suckers. Maybe an R/C car with a rotating coil sort of thing. My knowledge of electricity pretty much ends with "Don't stick coathangers into the wall socket". I know that high-tension lines will sometimes induce power in fences running parallel to the lines. Could this effect be useful against pressure plate IEDs at a range of a foot or so? If any one has any thoughts on the subject, no matter how bizarre, I'd love to hear 'em. (Other than "Just Leave." While effective, it's not in the cards.) Way smarter people than me are working on this I'm told. I thought I'd bring it to the attention of some of the smartest people on the net. If anyone knows where Fitch Williams hangs out now, he'd be a good one to ask, too. In closing, we can't remember our fallen in the traditional way until deployments end. If anyone would care to hoist a glass in salute, I'd be grateful. Godspeed guys. Thanks, Ken |
Afghan Bridge Update and Sad News
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Afghan Bridge Update and Sad News
Sorry to hear about your loss. There is nothing that comes to mind
that you can do that is easy and works 100%. i |
Afghan Bridge Update and Sad News
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Afghan Bridge Update and Sad News
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Afghan Bridge Update and Sad News
Ken,
Wes wrote: wrote: I have been wondering if there is any way to inductively couple enough current to prematurely detonate these suckers. Maybe an R/C car with a rotating coil sort of thing. My knowledge of electricity pretty much ends with "Don't stick coathangers into the wall socket". If you hooked that R/C system up to a humvee with realistic looking passengers, maybe that would work. AKA Bait. I suspect that jamming to deny the trigger signal is being used along with freq sweeping to try to trigger IED a head of convoy. This sounds like a remotely triggered device. Is that the threat, or does "pressure plate" mean they trigger on contact? Have we recovered and disarmed live bombs? It would all depend on the sophistication and variations in design. My guess is that they are contact activated and we simply need something other than our soldiers to push on them. That could take the form of a computer operated and armored ATV or something to go ahead of you, at least in the open areas. Thank all of you for your service. Ditto! Bill |
Afghan Bridge Update and Sad News
--Google on "inductive loop mine detector" for starters and you'll
see a fair number of clever ideas. I'm thinking something like this could probably be mounted on, or dragged behind an R/C car. Data could be transmitted to another location. With robotics at their current state it would be possible to teach a vehicle to sweep an area thoroughly and map the output. --Several years ago I lead a team that played around with third world methods for dealing with mine clearing but since then the available cheap electronics have greatly increased the possible routes to a solution. -- "Steamboat Ed" Haas : Whatever happened Hacking the Trailing Edge! : to Andy Philbrick? www.nmpproducts.com ---Decks a-wash in a sea of words--- |
Afghan Bridge Update and Sad News
wrote in message ... Hi Everyone. Thanks for all the help and advice on the Bridge Project. It's currently on hold, as the FOB Mayor wants to see if we can score some honest culvert from an Engineer Unit rather than build some. Works for me. On the 12th, we lost two good men and had a third badly injured courtesy of an IED. If I've figured the time zones right. it would still have been Memorial Day back home. I have been wondering if there is any way to inductively couple enough current to prematurely detonate these suckers. Maybe an R/C car with a rotating coil sort of thing. My knowledge of electricity pretty much ends with "Don't stick coathangers into the wall socket". I know that high-tension lines will sometimes induce power in fences running parallel to the lines. Could this effect be useful against pressure plate IEDs at a range of a foot or so? If any one has any thoughts on the subject, no matter how bizarre, I'd love to hear 'em. (Other than "Just Leave." While effective, it's not in the cards.) Way smarter people than me are working on this I'm told. I thought I'd bring it to the attention of some of the smartest people on the net. If anyone knows where Fitch Williams hangs out now, he'd be a good one to ask, too. In closing, we can't remember our fallen in the traditional way until deployments end. If anyone would care to hoist a glass in salute, I'd be grateful. Godspeed guys. Thanks, Ken Boy o boy - what a problem. They trigger those damn things every way there is a trigger I think. Cell phones, timers, pressure plates, Achmed with a toggle switch on a long wire. Short term solution - Sure wish I knew one. Be interesting to know the results of projecting a bigass focused EMP field 20 feet in front of the vehicle. I think power requirements and cycle time would prohibit running one all the time, but a crew could have a fire button to hit when passing suspicious roadside stuff. Would a Radio controlled small white pickup truck 90 feet in front of an APC be a useful sensor mount? Inflatable plastic driver behind the wheel..... Long term solution: Airstrikes on every mullah that preaches JIHAD! against the great and lesser satan. Markshere2 ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
Afghan Bridge Update and Sad News
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Afghan Bridge Update and Sad News
I'm reminded of WWII era mine-bashing tank accessories - a drum on long arms in front of the tank, with many pieces of chain, and the whole drum spun up to beat the ground and clear a swath. For pressure-plate type detonators, that should do as well as anything, and should be a known (if not current) technology. Presumably the drum takes some damage, and is made to be cheap and easily replaceable. I suspect there are several problems with reliably getting the damn things to go off with electricity or magnetics. Presumably, at the silly end of the scale, you could keep tossing neutron bombs and that ought to fix them, but with somewhat problematic side effects. As there are going to many variants, finding something that will manage to set off one is not likely to manage to set off others, and anything that will have enough energy to possibly pull it off is probably going to take something more like a remote-control humvee to have enough power to run it. Then you have the problem of remotely controlling something that is actively trying to send out a huge amount of interference (so perhaps it's controlled via cable, not radio), and the effects of that interference on communications, etc. -- Cats, coffee, chocolate...vices to live by |
Afghan Bridge Update and Sad News
On Sun, 18 Nov 2007 10:44:23 -0500, Bill Schwab
wrote: Ken, Wes wrote: wrote: I have been wondering if there is any way to inductively couple enough current to prematurely detonate these suckers. Maybe an R/C car with a rotating coil sort of thing. My knowledge of electricity pretty much ends with "Don't stick coathangers into the wall socket". If you hooked that R/C system up to a humvee with realistic looking passengers, maybe that would work. AKA Bait. I suspect that jamming to deny the trigger signal is being used along with freq sweeping to try to trigger IED a head of convoy. This sounds like a remotely triggered device. Is that the threat, or does "pressure plate" mean they trigger on contact? Have we recovered and disarmed live bombs? It would all depend on the sophistication and variations in design. My guess is that they are contact activated and we simply need something other than our soldiers to push on them. That could take the form of a computer operated and armored ATV or something to go ahead of you, at least in the open areas. Thank all of you for your service. Ditto! Bill http://en.wikipedia.org/wiki/Mine_flail http://en.wikipedia.org/wiki/Hobart%27s_Funnies Unfortuatly..most IEDs are command detonated, least thats the word I get from the sand box. Gunner "Pax Americana is a philosophy. Hardly an empire. Making sure other people play nice and dont kill each other (and us) off in job lots is hardly empire building, particularly when you give them self determination under "play nice" rules. Think of it as having your older brother knock the **** out of you for torturing the cat." Gunner |
Afghan Bridge Update and Sad News
some suggestions:
1. if in a cell phone area, there are cheap commercial cell phone detectors - use one of them to detect cell phone triggered devices 2. disassemble microwave oven, make horn to direct micorwaves downward, move the device (fairly slowly) over suspect ground - microwaves are likely (not guaranteed) to hurt detnoation electronics 3. for things triggered by pressure, you've had a lot of good suggestions wrote in message ... Hi Everyone. Thanks for all the help and advice on the Bridge Project. It's currently on hold, as the FOB Mayor wants to see if we can score some honest culvert from an Engineer Unit rather than build some. Works for me. On the 12th, we lost two good men and had a third badly injured courtesy of an IED. If I've figured the time zones right. it would still have been Memorial Day back home. I have been wondering if there is any way to inductively couple enough current to prematurely detonate these suckers. Maybe an R/C car with a rotating coil sort of thing. My knowledge of electricity pretty much ends with "Don't stick coathangers into the wall socket". I know that high-tension lines will sometimes induce power in fences running parallel to the lines. Could this effect be useful against pressure plate IEDs at a range of a foot or so? If any one has any thoughts on the subject, no matter how bizarre, I'd love to hear 'em. (Other than "Just Leave." While effective, it's not in the cards.) Way smarter people than me are working on this I'm told. I thought I'd bring it to the attention of some of the smartest people on the net. If anyone knows where Fitch Williams hangs out now, he'd be a good one to ask, too. In closing, we can't remember our fallen in the traditional way until deployments end. If anyone would care to hoist a glass in salute, I'd be grateful. Godspeed guys. Thanks, Ken -- Posted via a free Usenet account from http://www.teranews.com |
Afghan Bridge Update and Sad News
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Afghan Bridge Update and Sad News
On Sun, 18 Nov 2007 16:55:32 -0600, Don Foreman
wrote: Other ways of countering them also deserve thought: locate them and avoid them, or if manually fired then locate and destroy the lurker before he or she can plunk the magic twanger. Gets complicated when the lurker is a child, don't know if you're seeing any of that or not. Not at all complicated. You just dont have to lead em as much as an adult. Gunner "Pax Americana is a philosophy. Hardly an empire. Making sure other people play nice and dont kill each other (and us) off in job lots is hardly empire building, particularly when you give them self determination under "play nice" rules. Think of it as having your older brother knock the **** out of you for torturing the cat." Gunner |
Afghan Bridge Update and Sad News
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Afghan Bridge Update and Sad News
I believe that the standard approach is to do all things at once --
watch the road, use cell phone jammers, send sappers forward, and work with locals for getting tips (could also be a source of trouble). There is no magic answer as to how to pre-detonate all possible IEDs. The twisted pair wire is quite immune to any sort of interference. It is a difficult problem, since ingenious local people are willing to take considerable risks and they get paid for all soldiers killed and equipment destroyed. i |
Afghan Bridge Update and Sad News
Unfortuatly..most IEDs are command detonated, least thats the word I get from the sand box. Gunner Yep. That's the word we get from Iraq too. 'Round here, the pressure plate varients are by far the most common. Construction varies, but it goes like this... Take an explosive device, anything from homebrewed explosives to antique British and Russian A/T mines. Fuse with electric blasting cap. Bury mine to varying depths. Build a pressure plate from anything conductive which happens to be in the bomb-maker's reach that day. Bury shallow. Connect a couple D-Cells via some scavenged wire, and...wait. Pressure plates are generally around 18-24 inches long and from 1 to 8 inches wide. Insulators between the plates are anything that won' conduct too much electicity; from pieces of goat hide to bits of rubber. Pressure plate assy. is usually water/sand proofed in some manner. Goat hide, plastic bags, truck innertube, pvc pipe, etc. Since the pressure plates are generally large, shallow, and not electrically shielded, I was hoping to target them with an induced current. Not as easy as I was hoping, I see. If it were simple, somebody would have figured it out already. Sigh. We'll keep working the problem. Thank you all for your help and support! Ken |
Afghan Bridge Update and Sad News
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Afghan Bridge Update and Sad News
Gunner Asch wrote:
Google on "mine flail". They should work just dandy on a pressure plate mine. Should be something a craft shop could put together in a week or so. Mount it on the front of a bulldozer or similar. Gunner I wonder what a big vibratory soil compactor on a boom would accomplish? Wes |
Afghan Bridge Update and Sad News
Ken,
Since the pressure plates are generally large, shallow, and not electrically shielded, I was hoping to target them with an induced current. Not as easy as I was hoping, I see. If it were simple, somebody would have figured it out already. Sigh. We'll keep working the problem. What about a metal detector? Or might that set some of the damn things off? Thank you all for your help and support! Again, thank you! Bill |
Afghan Bridge Update and Sad News
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Afghan Bridge Update and Sad News
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Afghan Bridge Update and Sad News
On Mon, 19 Nov 2007 10:05:24 -0500, Bill Schwab
wrote: Ken, Since the pressure plates are generally large, shallow, and not electrically shielded, I was hoping to target them with an induced current. Not as easy as I was hoping, I see. If it were simple, somebody would have figured it out already. Sigh. We'll keep working the problem. What about a metal detector? Or might that set some of the damn things off? Very, very unlikely. There's no closed circuit in the described IED in which to induce current, and the field of a metal detector is very weak. The only way I know of that an EM field can fire a squib is if it's high enough in frequency (and powerful enough) to induce enough resonant RF current in the squib leads. Resonance doesn't require a closed circuit. That'd be at least UHF in frequency, and at least a couple of watts of power -- and then only if the metal pressure plate doesn't act as an effective RF shield. Metal detectors typically operate at kilohertz or low megahertz frequencies. |
Afghan Bridge Update and Sad News
On Nov 19, 8:45 pm, Don Foreman wrote:
The only way I know of that an EM field can fire a squib is if it's high enough in frequency (and powerful enough) to induce enough resonant RF current in the squib leads. Resonance doesn't require a closed circuit. That'd be at least UHF in frequency, and at least a couple of watts of power -- and then only if the metal pressure plate doesn't act as an effective RF shield. Metal detectors typically operate at kilohertz or low megahertz frequencies. My understanding is that the frequency needed depends on the length of the wires going to the det. And that about 27 MHZ is about right. Dan |
Afghan Bridge Update and Sad News
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Afghan Bridge Update and Sad News
On Tue, 20 Nov 2007 03:35:56 GMT, Winston
wrote: wrote: On Nov 19, 8:45 pm, Don Foreman wrote: The only way I know of that an EM field can fire a squib is if it's high enough in frequency (and powerful enough) to induce enough resonant RF current in the squib leads. Resonance doesn't require a closed circuit. That'd be at least UHF in frequency, and at least a couple of watts of power -- and then only if the metal pressure plate doesn't act as an effective RF shield. Metal detectors typically operate at kilohertz or low megahertz frequencies. My understanding is that the frequency needed depends on the length of the wires going to the det. And that about 27 MHZ is about right. The idea is to cause inductive heating of the of the squib, yes? There is no current path via the leads unless you can convince the enemy to install (say) a capacitor across their series switch. --Winston At RF frequencies where the squib leads form a half-wave dipole, no other current path is necessary. The squib itself would be the current path and electrical load. 27 MHz would require rather long squib leads, as might be found in mining, construction or demo setups. Twisted parts don't count much, but eventually they must separate enough to engage a switch and battery within an IED. |
Afghan Bridge Update and Sad News
Don Foreman wrote:
On Tue, 20 Nov 2007 03:35:56 GMT, Winston wrote: wrote: On Nov 19, 8:45 pm, Don Foreman wrote: The only way I know of that an EM field can fire a squib is if it's high enough in frequency (and powerful enough) to induce enough resonant RF current in the squib leads. Resonance doesn't require a closed circuit. That'd be at least UHF in frequency, and at least a couple of watts of power -- and then only if the metal pressure plate doesn't act as an effective RF shield. Metal detectors typically operate at kilohertz or low megahertz frequencies. My understanding is that the frequency needed depends on the length of the wires going to the det. And that about 27 MHZ is about right. The idea is to cause inductive heating of the of the squib, yes? There is no current path via the leads unless you can convince the enemy to install (say) a capacitor across their series switch. --Winston At RF frequencies where the squib leads form a half-wave dipole, no other current path is necessary. The squib itself would be the current path and electrical load. 27 MHz would require rather long squib leads, as might be found in mining, construction or demo setups. Twisted parts don't count much, but eventually they must separate enough to engage a switch and battery within an IED. I understand. So perhaps an FM microwave power oscillator feeding a downward facing parabolic antenna? Lots of ERP at all the reasonable frequencies? Sounds like something worth testing. --Winston |
Afghan Bridge Update and Sad News
On Mon, 19 Nov 2007 08:56:07 -0500, Wes wrote:
Gunner Asch wrote: Google on "mine flail". They should work just dandy on a pressure plate mine. Should be something a craft shop could put together in a week or so. Mount it on the front of a bulldozer or similar. I wonder what a big vibratory soil compactor on a boom would accomplish? You mean besides putting one vibratory soil compactor into low earth orbit? 8-O Call NORAD so they can track the trash... On second thought it probably won't make escape velocity, but "What goes up must come down" still applies. It's got enough mass to go right through whatever house or car roof it lands on. Headache!! That's the nifty thing about a mine flail, the arm is just far enough away that it should remain attached and mostly undamaged. You'll lose some of the chains and flail weights in the BOOM!, but they won't go nearly as far. -- Bruce -- |
Afghan Bridge Update and Sad News
How well do the thermal imaging night-vision cameras work in the
field? I built some telescopic lenses for them, about the size of a gallon paint can with black Germanium front elements, but never heard anything good or bad about them from the field. |
Afghan Bridge Update and Sad News
After a Computer crash and the demise of civilization, it was learned
Gunner Asch wrote on Sun, 18 Nov 2007 11:52:18 -0800 in rec.crafts.metalworking : On Sun, 18 Nov 2007 10:44:23 -0500, Bill Schwab wrote: Ken, Wes wrote: wrote: I have been wondering if there is any way to inductively couple enough current to prematurely detonate these suckers. Maybe an R/C car with a rotating coil sort of thing. My knowledge of electricity pretty much ends with "Don't stick coathangers into the wall socket". If you hooked that R/C system up to a humvee with realistic looking passengers, maybe that would work. AKA Bait. I suspect that jamming to deny the trigger signal is being used along with freq sweeping to try to trigger IED a head of convoy. This sounds like a remotely triggered device. Is that the threat, or does "pressure plate" mean they trigger on contact? Have we recovered and disarmed live bombs? It would all depend on the sophistication and variations in design. My guess is that they are contact activated and we simply need something other than our soldiers to push on them. That could take the form of a computer operated and armored ATV or something to go ahead of you, at least in the open areas. Thank all of you for your service. Ditto! Bill http://en.wikipedia.org/wiki/Mine_flail http://en.wikipedia.org/wiki/Hobart%27s_Funnies Unfortuatly..most IEDs are command detonated, least thats the word I get from the sand box. And thanks tot he NYT and the rest of "Al Majnoon", the terrs know about the jamming. So, back to Bell Telephone wire. tschus pyotr "Al Majnoon" is Arabic for "The lunatics", Literally "those possessed of a djinn (evil spirit)." -- pyotr filipivich "Quemadmoeum gladuis neminem occidit, occidentis telum est. " Lucius Annaeus Seneca, circa 45 AD (A sword is never a killer, it is a tool in the killer's hands.) |
Afghan Bridge Update and Sad News
On Nov 20, 4:21 am, Don Foreman wrote:
At RF frequencies where the squib leads form a half-wave dipole, no other current path is necessary. The squib itself would be the current path and electrical load. 27 MHz would require rather long squib leads, as might be found in mining, construction or demo setups. Twisted parts don't count much, but eventually they must separate enough to engage a switch and battery within an IED. Right. 27 mhz is about 11 meters so for a half wave length dipole each wire would be about 9 feet. This is what I vaguely remember from some classes. If you want better information search on " HERO safe ordnance ". Dan |
Afghan Bridge Update and Sad News
On Tue, 20 Nov 2007 05:39:13 GMT, Winston
wrote: Don Foreman wrote: On Tue, 20 Nov 2007 03:35:56 GMT, Winston wrote: wrote: On Nov 19, 8:45 pm, Don Foreman wrote: The only way I know of that an EM field can fire a squib is if it's high enough in frequency (and powerful enough) to induce enough resonant RF current in the squib leads. Resonance doesn't require a closed circuit. That'd be at least UHF in frequency, and at least a couple of watts of power -- and then only if the metal pressure plate doesn't act as an effective RF shield. Metal detectors typically operate at kilohertz or low megahertz frequencies. My understanding is that the frequency needed depends on the length of the wires going to the det. And that about 27 MHZ is about right. The idea is to cause inductive heating of the of the squib, yes? There is no current path via the leads unless you can convince the enemy to install (say) a capacitor across their series switch. --Winston At RF frequencies where the squib leads form a half-wave dipole, no other current path is necessary. The squib itself would be the current path and electrical load. 27 MHz would require rather long squib leads, as might be found in mining, construction or demo setups. Twisted parts don't count much, but eventually they must separate enough to engage a switch and battery within an IED. I understand. So perhaps an FM microwave power oscillator feeding a downward facing parabolic antenna? Lots of ERP at all the reasonable frequencies? Sounds like something worth testing. --Winston Now it becomes political. Try and find DARPA funding to do any such research! Hm, I think my pass to the ordnance proving grounds near St. Francis has expired -- about 30 years ago. |
Afghan Bridge Update and Sad News
On Tue, 20 Nov 2007 05:39:13 GMT, Winston
wrote: Don Foreman wrote: At RF frequencies where the squib leads form a half-wave dipole, no other current path is necessary. The squib itself would be the current path and electrical load. 27 MHz would require rather long squib leads, as might be found in mining, construction or demo setups. Twisted parts don't count much, but eventually they must separate enough to engage a switch and battery within an IED. And the first (admittedly silly) thing that flashed through my head... "Breaker One Nine, this here's the Rubber Duck. Hey Pig-Pen, you got your ears on?..." -=+*(BOOM!)*+=- I understand. So perhaps an FM microwave power oscillator feeding a downward facing parabolic antenna? Lots of ERP at all the reasonable frequencies? Sounds like something worth testing. --Winston The RF is to induce electrical current in the squib leads, and that current would be the source of the heat to trigger the squib. And if it doesn't work for that, a 10KW focused microwave beam certainly will BBQ any roadkill in front of the antenna. ;-) A properly designed explosive device has the squib leads twisted, shielded and grounded out, RF shielding and bypass capacitors, and other things done deliberately to keep stray RF signals out of the trigger circuit, and all that protection stays in place till the last possible second. Since premature detonation isn't too healthy for the bomb builders or the delivery crew. But IED's are nothing like properly designed explosive devices, so potentially large doses of RF at the right frequencies could work. At least till they figure out how we're defeating them... -- Bruce -- |
Afghan Bridge Update and Sad News
I would be amazed if simple "wrap it in foil and use twisted wire"
approach did not 100% prevent premature detonation through any kind of RF generator. i |
Afghan Bridge Update and Sad News
On Tue, 20 Nov 2007 05:35:48 -0800, pyotr filipivich wrote:
Gunner Asch wrote : Unfortuatly..most IEDs are command detonated, least thats the word I get from the sand box. And thanks tot he NYT and the rest of "Al Majnoon", the terrs know about the jamming. So, back to Bell Telephone wire. tschus pyotr "Al Majnoon" is Arabic for "The lunatics", Literally "those possessed of a djinn (evil spirit)." Are you saying that the New York Times, CNN (Clinton News Network) and other Leftie Loonie US news outlets are deliberately leaking military secrets on how we're getting a leg up on Al Queda, so the other side can stop doing those things? As Captain Renault would say "I'm SHOCKED!" Not. Like how Osama Bin Ladin spit stopped using his satellite phone the second word leaked out we had his number? And we could have dropped a cruise missile in his lap simply by homing in on it? "Freedom of the Press" only works with a responsible press. And responsible means you don't give out operational details that can affect the outcome while the game is still afoot. We invented Spread Spectrum frequency hopping scrambling in WW-II, and many other technological advances that greatly shortened the war. But word didn't get out about most of them till much later - and that was entirely on purpose. -- Bruce -- |
Afghan Bridge Update and Sad News
Don Foreman wrote:
(...) Now it becomes political. Try and find DARPA funding to do any such research! Hm, I think my pass to the ordnance proving grounds near St. Francis has expired -- about 30 years ago. I can't help with that problem but I think your 'mine roaster' is an excellent idea. --Winston |
Afghan Bridge Update and Sad News
"Bruce L. Bergman" wrote in message ... On Tue, 20 Nov 2007 05:35:48 -0800, pyotr filipivich wrote: Gunner Asch wrote : Unfortuatly..most IEDs are command detonated, least thats the word I get from the sand box. And thanks tot he NYT and the rest of "Al Majnoon", the terrs know about the jamming. So, back to Bell Telephone wire. tschus pyotr "Al Majnoon" is Arabic for "The lunatics", Literally "those possessed of a djinn (evil spirit)." Are you saying that the New York Times, CNN (Clinton News Network) and other Leftie Loonie US news outlets are deliberately leaking military secrets on how we're getting a leg up on Al Queda, so the other side can stop doing those things? As Captain Renault would say "I'm SHOCKED!" Not. Like how Osama Bin Ladin spit stopped using his satellite phone the second word leaked out we had his number? And we could have dropped a cruise missile in his lap simply by homing in on it? "Freedom of the Press" only works with a responsible press. And responsible means you don't give out operational details that can affect the outcome while the game is still afoot. The news source in question actually was a Rightie Loonie US news outlet: the Washington Times. However, even that didn't happen, Bruce. Urban legend: http://www.truthdig.com/report/item/...hone_20060110/ http://www.slate.com/id/2132975/ etc. -- Ed Huntress |
Afghan Bridge Update and Sad News
On Tue, 20 Nov 2007 15:12:19 -0600, Ignoramus10223
wrote: I would be amazed if simple "wrap it in foil and use twisted wire" approach did not 100% prevent premature detonation through any kind of RF generator. i I worked in two-way radio/RF for most of my career. It really isn't all that easy to shield things from RF. What looks good to the eye can leak horribly and what you would swear could never work does... -- Leon Fisk Grand Rapids MI/Zone 5b Remove no.spam for email |
Afghan Bridge Update and Sad News
On 2007-11-21, Leon Fisk wrote:
On Tue, 20 Nov 2007 15:12:19 -0600, Ignoramus10223 wrote: I would be amazed if simple "wrap it in foil and use twisted wire" approach did not 100% prevent premature detonation through any kind of RF generator. i I worked in two-way radio/RF for most of my career. It really isn't all that easy to shield things from RF. What looks good to the eye can leak horribly and what you would swear could never work does... But would RF deliver enough amps to cause detonation? i |
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