I've never read any review anywhere that suggests that the 'legal' radar jammers work at all.
http://www.radartest.com/article.asp?articleid=6000
http://matt.simerson.net/reference/radar-scam.shtml
A test published on the Net by John deArmond, one in Automobile, one by Speed labs and another test in Car and Driver (not surprisingly) found that these only make your bank balance invisible and not your car invisible. Another test in the at Troubleshooter News also found the Phantom and Rocky Mountain Radar jammers are a fraud. I have NEVER heard of a single case where these things work.
http://www.radartest.com/article.asp?articleid=6000
http://matt.simerson.net/reference/radar-scam.shtml
A test published on the Net by John deArmond, one in Automobile, one by Speed labs and another test in Car and Driver (not surprisingly) found that these only make your bank balance invisible and not your car invisible. Another test in the at Troubleshooter News also found the Phantom and Rocky Mountain Radar jammers are a fraud. I have NEVER heard of a single case where these things work.