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Anonymous Poster

Remote RF Detonation of IEDs and Car Bombs

08/18/2005 8:24 AM

Dean Brock writes:
Sirs; Firstly, let me start off by saying, I'm not an Engineer but I might have an idea that might be worth pursuing. I have a few friends at MCACC, Marine Corps Air Combat Center, 29 Palms, California that just back from Iraq, and in talking with them I was told of the extreme danger with car bombs. They use a wide variety of switches connected to an electronic detonator. And I think this might be a weak point, the detonators. I have noticed over the years when driving through an area when there is blasting is about to be done, there is signs all over the place telling us to turn off all CB radios, cell phones. At 29 Palms when you drive in through the front gate there are signs stating all transmitting devices in excess of 30 watts are to be turned off and not to be used, especially over by the magazine.

My question is: Would it to be possible to detonate an IED ( improvised explosive device) or car bomb by bombarding it with high levels of RF energy? Or to use the RF to initiate the electronic detonators thusly exploding the device.

(Continued - click Reply / Read More below) Marines have told me that when you are at a vehicle check point this is a real hairy time. Any one of these cars has the capability of being "the one". There is just no way to tell until you do a vehicle search. The problem is, once the insurgent knows he is about to be searched he decides to cap the thing off right there at the check point instead of original destination. A secondary target of opportunity if you will.

My thought, to build a large rack, large enough to get a truck through, and have high RF energy emitters mounted on all sides of the target vehicle. If what I'm thinking is a possibility the RF should set off the device. One other thing, our Marines are back at a safe distance in case this thing goes off. They will just direct the suspect vehicle to the rack. Or have all vehicles go through the rack. It would keep all traffic back behind the rack until it can be checked by the rack. Thusly keeping danger away from our guys.

I don't have the technical ability or expertise to build this device but maybe one of you can.

I would be interested in hearing if this is feasible.

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Commentator

Join Date: Jul 2005
Posts: 65
Good Answers: 4
#1

RE: Remote RF Detonation of IEDs and Car Bombs

08/19/2005 12:34 AM

I'm sure you will get much better responses than I can give, but I see two difficulties with this idea. If you want to detonate the bomb directly, be my guest. The trouble is how to detonate bombs using High RF energy without destroying the electronics in the vehicles that are not offenders. I am not aware of any technology that can zero in on explosives, without bothering other things. If you could devise a "reverse jammer" that would send codes of all kinds to crack the code of remote control type detonators (if that is what they use), you may be on to something. This would not require high power RF energy, and such devices could be secretly deployed anywhere such as in remote areas where there would be no collateral damage. All in all, though, it might be worth a try either way - just be kind to the innocent's vehicles. I'm glad you are thinking about how to help the efforts to beat these terrorists at their own game. I remember a proverb: Those who live by the sword - die by the sword... I hope someday they will learn the foolishness trying to obtain good with evil.

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Join Date: May 2005
Posts: 92
#2

RF Detonation

08/19/2005 3:51 AM

Good idea, but one immediate issue would be containing the blast safely. These things are designed to cause maximum damage to as wide an area as possible. A second issue would be indentifying the exact R/F frequency required to cause detonation of the device. Detonators exist with a wide variety of specification, all with different characteristics. Additionally, climatic conditions would affect both the detonator characteristics and the range of frquencies at which it responds. My RAF experience taught me that it is impossible to predict the exact frequency which will result in a detonation at any one time. The only sure method of avoiding premature detonation is to eliminate all sorces of R/F. Sorry, but I don't think this idea would be practicable or safe :-(

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#3

Re: Remote Detonations

08/19/2005 10:54 AM

It appears you are not the first to consider this topic or this approach. I found a NewsMax story from 2002 with a similar approach being suggested. (http://www.newsmax.com/archives/articles/2002/4/1 3/04444.shtml) It is an interesting approach, but is probably limited by the possible adverse effects on people and equipment. The following article from the National Amateur Radio Association has an interesting article that includes some information of this type (http://www.arrl.org/news/rfsafety/hbkrf.html). It would seem that the low levels for detonating nearby blasting caps might be safe, but trying to develop a traveling armored car to conduct RF sweeps (per the NewsMax story) might have adverse side effects on people and things it passes as well as those driving the car itself. But like I often say at work, it is not an impossible task, just not as easy as it may first seem.

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