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Re: Radar detector/jammers (fwd)
Bob, Get this on how this guy claims a "passive" radar jammer works:
> Subject: Re: Radar detector/jammers (fwd)
> Okay, I'm having a hard time trying to explain how this device works.
> I'll try again. The unit I use does not "change" the frequency. It does
> not transmit a signal to overload or overpower the receiver. It does not
> transmit a signal to "mask" the refelcted signal returned by the vehicle.
> This unit reflects the signal back to the radar unit with some noise
> mixed in to "confuse" the receiver into thinking that the velocity of the
> vehicle is increasing and decreasing very rapidly, much faster than what
> is physically possible with a vehicle with mass. This prevents the
> receiver from "locking-on" to the reflected signal and prevents any
> reading from being displayed on the radar unit. The jammer is really very
> simple. It has the antenna/reflector and some type of diode, I think,
> that generates the noise that gets mixed back in. I guess that
> "technically" the diode could be called a "transmitter", much in the same
> way as any vehicle ignition system, spark plug, car radio receiver, or
> even any piece of wire that has an electrical current passing through it
> could be called a "transmitter", perhaps even individual molecules and
> atoms could be technically called "transmitters". From the legal and FCC
> perspective, it is *NOT* a transmitter as the signal level is far to low.
> How low? Dunno..... That is about the best I can do in trying to describe
> how this device works, and work it does. I don't design, build or sell
> these units and I don't own stock or interest in any company that does or
> any supplier. My observations are based solely on real-world performance
> of the unit of the course of several years and my experience with the
> unit is related only as a service to others that might be interested in
> such units (disclaimer).
> The theory on how this unit could work has bee reviewed by a very
> sceptical engineer, an expert with radar, LORAN, radio receivers and
> transmitters, amateur radio HW, is aand is also the owner of the MPH
> Industries K55 radar unit used for the previsouly mentioned testing.