So now the insugents will just configure the devices so that their transmitter is on constantly, so when the jammers get close enough to disrupt the signal, the device goes off, or they will connect the device to a wire that is burried and run some distance away, (presumably to get away from the jammer as far as possible) then attatch the remote receiver/trigger within sight of the device. Tracing the wire only leads to a receiver and nothing else. The insugents have engineers working for them too, many trained in the US or UK who know how this stuff all works. They boast about being able to selectively jam cellphone signals on a band-by-band basis and even demonstrated it to a reporter. Many of the triggers are little more than a modified FRS radio strapped to explosives, simple, cheap, effective and virtually untraceable.
-- "Tom Root" <[EMAIL PROTECTED]> wrote: <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />How do you define interesting? . J .thanks .T Tom Root, WB8UUJ <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />Flushing, MI USA From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Curt Phillips W4CP Sent: Thursday, October 04, 2007 1:39 PM To: RARSlist RARSlist; Tarheel Scanner Subject: [Swlfest] US Radio Jamming in Iraq to disrupt IEDs Below is an excerpt from an article in the Washington Post on US forces using radio jamming to disrupt the detonation of IEDs against our troops. The link takes you to the complete article.It was very interesting to me, both as a radio hobbyist and just as general interest read on the problems and solutions in Iraq.73, CurtCurt Phillips, CEM, CMVP W4CP ex-KD4YU; WB4LHI ARRL Life; QCWA; SKCC; NASWA Tar Heel Scanner/SWL Group Monitoring DC to Daylight Raleigh, NC w4cp<at>arrl.net-- The only thing that can defeat the US military is US politicians. 'If you don't go after the network, you're never going to stop these guys. Never.'By Rick Atkinson Washington Post Staff Writer Wednesday, October 3, 2007; Page A01 BAGHDAD -- In the early spring of 2006, perhaps the most important document in Baghdad was known as the MOASS -- the Mother of All Spreadsheets-- a vast compilation of radio frequencies that insurgents used to trigger roadside bombs. In some areas of Iraq, 70 percent of all improvised explosive devices were radio-controlled, and they caused more than half of all American combat deaths. An overworked Army intelligence officer tracked the frequencies, and an equally overworked Navy electrical engineer matched them against 14 varieties of electronic jammer used by coalition forces. [SNIP] By the end of 2006, the Department of Defense had spent more than $1 billion during the year just on jammers. Fielding them "proved the largest technological challenge for DOD in the war, on a scale last experienced in World War II," according to Col. William G. Adamson, a former staff officer for the Joint IED Defeat Organization (JIEDDO), the Pentagon office coordinating the campaign. The U.S. strategy was defined in six words: "Put them back on the wire." By neutralizing radio-controlled bombs, the jammers would force insurgent bombmakers to use more rudimentary triggers, such as command wire. Those triggers would be simpler to detect, in theory, and would bring the triggermen closer to their bombs, where U.S. troops could capture or kill them. That strategy has succeeded. In the subsequent 18 months, radio-controlled bombs would shrink to 10 percent of all IEDs in Iraq. FULL STORY: http://www.washingtonpost.com/wp-dyn/content/article/2007/10/02/AR2007100202366.html?referrer=emailarticle Luggage? GPS? Comic books? Check out fitting gifts for grads at Yahoo! Search.
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