Jammers or Detectors. Which is best

**Skyryder** · 16th January 2005, 12:05

On the Parra Parra's I got talking to rider who uses a radar jammer. His line of thought was that a jammer prevented a speed readout that could be used in evidence and that jammers were effective against the instant laser gun's signal.

This guy used a Rocky Mountain but I am uncertain of the model.

Skyryder

**k14** · 16th January 2005, 13:13

As i said in the other thread, you need both. All a jammer does is stop you getting zapped by the laser guns. You still need a detector to pick up the Ka band radar. Don't think you can get a jammer for that, something to do with it being illegal to operate on that band without a licence.

**inlinefour** · 16th January 2005, 13:49

Originally Posted by Skyryder

On the Parra Parra's I got talking to rider who uses a radar jammer. His line of thought was that a jammer prevented a speed readout that could be used in evidence and that jammers were effective against the instant laser gun's signal.

This guy used a Rocky Mountain but I am uncertain of the model.

Skyryder

It was my understanding that jammers are illegal and that if you are caught with one you are severely in the shit

**TwoSeven** · 16th January 2005, 14:58

There was a big thread on this a while ago (on radars in general). Jammers are next to hopeless, especially if they are using laser units which are pointed at the vehicle - line of site. In that scenario detectors are pretty rubbish as well.

**avgas** · 16th January 2005, 15:07

Jammers are and arent illegal. They cant outlaw em cos they essentially do the same job that the radars guns do, but on a different principal.
Anyone up for making bike mobile emp's?

**sAsLEX** · 16th January 2005, 16:41

Originally Posted by avgas

Jammers are and arent illegal. They cant outlaw em cos they essentially do the same job that the radars guns do, but on a different principal.
Anyone up for making bike mobile emp's?

To operate a device that emits certain frequencies at certain powers you require a license, which most people operating a jammer that works properly on the sly wouldn't have!

**ajturbo** · 16th January 2005, 17:16

Originally Posted by sAsLEX

To operate a device that emits certain frequencies at certain powers you require a license, which most people operating a jammer that works properly on the sly wouldn't have!

they are only illegal if you get caught ... right?

**StoneChucker** · 16th January 2005, 18:40

Originally Posted by ajturbo

they are only illegal if you get caught ... right?

Isn't that the general rule of life?

**Skunk** · 16th January 2005, 18:58

Originally Posted by avgas

Anyone up for making bike mobile emp's?

I'd love one of those to use on the boy racers round here with the loud stereos

Imagine their faces

**Skyryder** · 16th January 2005, 19:05

As I understand the law yes anything that 'jams' a radar signal is illegal. Now to jam a signal requires the device to 'transmit' a signal that will interfere with the radar or lasar gun. I raised this very question with this guy I met on the Para Parra's. Now this guy said that 'jammers' (as they are known) do not transmit and therefore are not illegal. What they do is prevent the radar or laser gun from recieving their own signal. How they do this I am not too sure but one thing he was positive about was that 'jammers' are not a transmitter and therefore legal. Does anyone have some factual information on this??

Skyryder

**sAsLEX** · 16th January 2005, 19:21

Originally Posted by Skyryder

What they do is prevent the radar or laser gun from recieving their own signal.

Skyryder

Well they cant passivly Jam, this just wont work, if they dont transmit then they can have no effect on the radar in the cops hands! How they would do what it says above baffles me, maybe inside the "jammer" is a tiny martian who eats radar energy or something like that.

At the mo I am working in the Radar and Communications section at work and will pose this question to those there, but the jammer one of the guys made there definately did transmit!

**What?** · 16th January 2005, 19:32

The jammer need simply transmit a wave identical to, but perfectly out of sync with the radar device. This inverse wave will effectively cancel the first one, so the stalker or whatever won't register anything.

**Skyryder** · 16th January 2005, 19:55

Originally Posted by sAsLEX

Well they cant passivly Jam, this just wont work, if they dont transmit then they can have no effect on the radar in the cops hands! How they would do what it says above baffles me, maybe inside the "jammer" is a tiny martian who eats radar energy or something like that.

At the mo I am working in the Radar and Communications section at work and will pose this question to those there, but the jammer one of the guys made there definately did transmit!

This
Importantly, a jammer functions only as a receiver, not a transmitter, and is therefore compliant with FCC regulations. It merely reflects back to the targeting device what is essentially a confusing return signal that the device's computer cannot interpret. In this way, a jammer can serve as both a detection device and as a proactive evasion device.

from this http://radardetectors.articleinsider...mers_work.html

Would like to know how this works. looking forward to your reply on this.

Skyryder

**dangerous** · 16th January 2005, 20:01

There is only one lazer jammer that has a 0% fail (in NZ) that is the Blinder M20 X Treme M10+

HOW DO POLICE LASER GUNS GET YOUR SPEED? The laser gun sends out a very narrow laser beam filled with invisible light
pulses, pointed at your license plate or headlights. The laser beam reflects
off your vehicle, back to the laser gun. The time required from transmission
until the reflection is received is calculated by the laser gun's computer.
This measurement is made about 70 times in 1/3 of a second for fast, high
accuracy.

HOW DOES THE M20 X Treme M10+ WORK?
A laser jammer adds laser "noise" to the reflected signal. The Blinder? M20
X Treme M10+ correctly analyzes the incoming laser gun pulse and gets past
the laser gun filters to cause the speed gun display panel to remain blank.
The M20 X Treme M10+ constantly scans for laser, but jams only during the
alert phase, thus providing long life for the product. When laser is
detected, the Laser Warning System installed in the driver's compartm?ent
provides warning, giving the driver time to check vehicle speed. After speed
is checked, the driver should turn off the system to enable the officer to
detect your vehicle's adjusted speed. Once past the speed trap, turn the M20
or M40 X Treme it back on.

It is legal to buy, sell, own a lazer jammer...... however it is illegal to stop a copper from doing his job, which is what the jammer does.
However.................. if the copper gets a zero reading, then there is no proof that you were speding so you can not be nicked for that that means there is no proof that you stopped the copper from doing his job.

**k14** · 16th January 2005, 20:22

Originally Posted by Skyryder

This
Importantly, a jammer functions only as a receiver, not a transmitter, and is therefore compliant with FCC regulations. It merely reflects back to the targeting device what is essentially a confusing return signal that the device's computer cannot interpret. In this way, a jammer can serve as both a detection device and as a proactive evasion device.

from this http://radardetectors.articleinsider...mers_work.html

Would like to know how this works. looking forward to your reply on this.

Skyryder

That cut/paste bit doesn't make sense. First it says it doesnt transmit anything, but then says it sends a "confusing" signal back, how does it do that without transmitting anything?

As far as I know the laser jammers work by sending the exact same beam that the laser gun emits. Because the wavelength isn't altered in any way the gun just thinks the car is stationary.