Start thinking Faraday Cage for your cars electronics.

PopSci's The Future Of Security: Car stopper - Eureka Aerospace

I'll see it when I believe it.

Getting the microwave energy onto the target is a function of the amount of power you're starting with, the effectiveness of your antenna system and distance to target. All those factors interact so a fairly small microwave source might be good enough with a tightly-focused antenna and a target that's not too far away. But an antenna gets better the bigger it is, more or less, and power on target obeys the inverse square law - twice the distance means a quarter the power.

Then there's the wave length of the microwave energy. Shorter wave length means smaller antenna but a tougher job getting to the power levels necessary to ensure interference with the car's electronics. Go short enough, if you can, and atmospheric conditions become a consideration.

Then there's the cars. Radiation-hardening isn't exactly cutting edge any more and manufacturers might decide to harden their products against just this sort of disruption because it's not just cops who can put together a high power microwave source and a high-gain antenna.

Quote from: arpad on August 09, 2011, 06:20:38 AM
I'll see it when I believe it.

Getting the microwave energy onto the target is a function of the amount of power you're starting with, the effectiveness of your antenna system and distance to target. All those factors interact so a fairly small microwave source might be good enough with a tightly-focused antenna and a target that's not too far away. But an antenna gets better the bigger it is, more or less, and power on target obeys the inverse square law - twice the distance means a quarter the power.

Then there's the wave length of the microwave energy. Shorter wave length means smaller antenna but a tougher job getting to the power levels necessary to ensure interference with the car's electronics. Go short enough, if you can, and atmospheric conditions become a consideration.

Then there's the cars. Radiation-hardening isn't exactly cutting edge any more and manufacturers might decide to harden their products against just this sort of disruption because it's not just cops who can put together a high power microwave source and a high-gain antenna.

Yep, that's why I said Faraday cage, they are simple to do, but I'm willing to bet the leftists would make it illegal to have one protecting your electronics.

Just use an aluminum bodied car - that's plenty good enough!  No need for copper...

Glass can be an issue, but a mylar sun tint is conductive enough to act as a barrier.

Quote from: Shanghai Dan on August 09, 2011, 04:26:23 PM
Just use an aluminum bodied car - that's plenty good enough!  No need for copper...

Glass can be an issue, but a mylar sun tint is conductive enough to act as a barrier.

Yeah, just wrapping your essential components in aluminum window screen will make a huge difference.