Was there ever a real commercially available radar jammer?

**justin81** · 12-29-2008 09:48 PM

I doubt it, but I was wondering. Obviously, the RMR stuff does not work. However, I was talking with a mechanic recently who swears he remembers a device where you could "dial" in a speed and that is what would be displayed on the LEO's radar gun.

P.S. - I'm sorry if this should have been posted in the "jammer" forum. If the mods choose to move it, I totally understand.

**Google Adsense** · 12-29-2008 09:48 PM

**Paperlantern** · 12-29-2008 10:07 PM

Originally Posted by justin81

I doubt it, but I was wondering. Obviously, the RMR stuff does not work. However, I was talking with a mechanic recently who swears he remembers a device where you could "dial" in a speed and that is what would be displayed on the LEO's radar gun.

P.S. - I'm sorry if this should have been posted in the "jammer" forum. If the mods choose to move it, I totally understand.

A device like this would have to have the capability of detecting radar, duplicating the frequency and replicating the doppler shift of the return signal to the gun and make it stronger then the ACTUAL returning signal to mask that to force the LEO's gun to read a certain speed. This would be virtually impossible.

**erickonphoenix** · 12-29-2008 10:08 PM

There were two but they were different versions of the same gun and the term commercially available would be a stretch. They were built in a garage, were expensive and fell out of tune very easy. Roy tested the latest version called the Scorpian Ka jammer before it went away. That test should still be on Radarbusters.com. Although effective the unit could fall out of tune easy and could start yeilding some very undesirable results, like rouge speeds faster than you were going.

The fact these devices are completely illegal limits the R&D required to build, and sell reliable units on a mass basis. Even if you build and distribute over seas getting something that illegal into the U.S. would be challenge.

EDIT: (But the above should not deter any ambitious entrepaneur from developing one. Please . . . )

**Lucky225** · 12-29-2008 10:58 PM

Originally Posted by erickonphoenix

There were two but they were different versions of the same gun and the term commercially available would be a stretch. They were built in a garage, were expensive and fell out of tune very easy. Roy tested the latest version called the Scorpian Ka jammer before it went away. That test should still be on Radarbusters.com. Although effective the unit could fall out of tune easy and could start yeilding some very undesirable results, like rouge speeds faster than you were going.

The fact these devices are completely illegal limits the R&D required to build, and sell reliable units on a mass basis. Even if you build and distribute over seas getting something that illegal into the U.S. would be challenge.

EDIT: (But the above should not deter any ambitious entrepaneur from developing one. Please . . . )

There were 3 actually, don't forget the oldskool ECM 5446 Active Radar Jammer from Remote Systems, that oldskoolness was l33t enough to let you spoof speeds

**Stealth Stalker** · 12-29-2008 10:59 PM

I don't know for sure if those early day jammers -- like the dial-in model that your friend and I remember -- ever really worked well. I would say there is a decent enough chance that they did. But that would have been well before Digital Signal Processing (DSP) and new bands became the standard. Now you have radar on three bands and half a dozen different frequencies, all running DSP. There is just no way, short of a military R&D budget, that it's going to happen at the consumer level. Simply not enough of a market for it. Hell, detectors are legal, and it's still a pretty limited niche market. Imagine how small the market is for an illegal jammer. They'd never make back their investment, even if they did find some Chinese sweat shop to make them cheaply.