Radar Jammers - Page 2

Guinness · #21 (**permalink**) 04-23-2003, 02:48 PM

Just reach over and turn that little rotary switch, presto you disappear! It works for me!

G.R. · #22 (**permalink**) 04-23-2003, 02:52 PM

computerworks · #23 (**permalink**) 04-23-2003, 03:03 PM

(True story...)
When we were in high school, one of the guys found a book about how planes used to drop "chad", or squares of metal, to block radar during WWII. We all had gotten speeding tickets in a radar trap by Kennedy airport.
So, this guy rigged a spring-loaded box, with a cable-release, to the front of his '61 Chevy. We spent one night cutting about a thousand 1-inch squares of aluminum foil. We all jumped in the car, and ran the radar trap at about 70 mph, releasing the foil about 500 feet before the trap.
....well, we got pulled over by NY's Finest... the cop asked "..just what in the hell was that all about?" The driver sheepishly explained the concept.
The cop thought it was the funniest thing he ever heard...
...gave him a pass on the speeding, but issued a $100 fine for Littering.

...chad don't work.

4RE KLR · #24 (**permalink**) 04-23-2003, 04:13 PM

That is funny.

My truck was in the shop for some warranty work one time and the salesman loaned me his personal truck for the night. The next morning I am going to the office and low and behold I get pulled over. The policeman is walking up to the truck and just about the time he gets to the truck and says "You know why I pulled you over" The damn radar detector starts to go off. The policeman is laughing so hard he starts to tear up, and says "wow those things really do work" as he writes the ticket.

Hello defensive driving!

Junket · #25 (**permalink**) 04-23-2003, 04:14 PM

Price

U-2 what is the price tag on the little knob 100 K

ToTheMetal · #26 (**permalink**) 04-23-2003, 04:21 PM

Sorry Guys, but you're talking about my line of work...Those things, if seen, garnish instant "documentation." Better offer showing you're engines, or cry like a baby before wasting your money.

PatBuckley · #27 (**permalink**) 04-23-2003, 04:46 PM

ToTheMetal:

I agree - when I moved to California I got two tickets in three weeks....the Escort I was using worked great in Florida - not so great in California.

Just before the officer wrote up the second ticket he bent over, looked at the detector and said "those things don't work around here..."

I agreed.

pb

Slow Dawg · #28 (**permalink**) 04-23-2003, 05:24 PM

I was going through some old files a couple weeks ago and found this. It didn't help much about 2 years ago.

http://www.radartest.com/

Ron

Steve Kirkham · #29 (**permalink**) 04-23-2003, 05:56 PM

According to a Utah HP officer, jammers do work... Unfortunately some of them put out too much signal and cook the radar gun.

He says when his display suddenly goes dead, he looks around very carefully and when he finds the guy, the citations, fines, impounds, and radar equipment replacement bills (with labor) make all speeding tickets look tame.

On the other hand, apparently flat black is pretty good at absorbing the laser.

The newest radar (according to my mole) has a secondary frequency broadcast that causes a patch of asphalt to re-radiate a signal as well for a good comparison. It seems to be worthless in heavy rain, so if you're into serious hydroplaning...

Supposedly iron oxide is the active ingredient in radar absorbing paints. Rumor has it that it was inspired by a Japaneese artist who got hold of way too much magnetic tape somewhere and wrapped a bridge with it. Ship captains reported that the bridge disappeared from radar screens. Supposedly it turns microwaves into static electricity.

There's also microwave absorption material inside microwave ovens. If you've got a fiberglass snake and a hankering to undercoat the underside of your non-metallic painted car with it, you might have something. The radiator and headlights would still be a problem, though.

todd · #30 (**permalink**) 04-23-2003, 08:33 PM

Steve,
You are right about the color of paint, as a white car reflects the most amount of light rays in the light spectrum, a flat black car absorbs the most amount of light. According to the LIDAR training manual, this will not affect the accuracy, however could slightly reduce the range.

Second, any jamming device that emits a radio signal that is in the range of RADAR and LIDAR systems (24.15 gigahertz and 330 Terahertz) would have to be regulated by the FCC. All police agencies that use RADAR or LIDAR have a FCC certificate on file. From the National Highway Traffic Safety Administration " the FCC will not license a device whose purpose is to jam police RADAR. Even when using an already licensed radio transmitter would violate federal regulations if used to jam police RADAR".

What BnB said about the angle of the "camera" is not the case. The angle from a "k" bands (APB/Tomcat,Kustom/Falcon,Decatur Genesis) is 12 degrees from the gun. That angle spreads the beam out at a rate of 10.5 feet for every 50 feet traveled downrange. The ka band RADAR (Stalker) has a angle from the gun of 9 degrees. so the beam width is 7.9 feet wide for every 50 feet downrange. As you can see, a front license plate cover has little effect on a RADAR.
The beam for a Kustom Laser is 45mm at the lens or 4 feet at 1000 feet. The beam of a Stalker laser is 3 feet at 1000. That is what those plate covers were made for, however the LP is not the only place to shoot the laser.

The other angle effect is talking about the cosine angle that the beam coming from the gun hits the target. That angle is the angle of the gun the officer holds it at. That is why they get as close to the roadway and then point it as parallel to the roadway as possible. If the angle of the gun to the target is less than 10 degrees it is not a factor. Any more than 10 degrees could actually be in favor for the violator.

Example:

the angle of the gun to the roadway is 5 degrees
the car is travelling at 50 mph
the RADAR would read 49.81 mph
The RADAR would display 50 mph

The angle of the gun to the roadway is 10 degrees
the car travelling at 50 mph
the RADAR would read 49.24 mph
the RADAR would display 49 mph

Remember that most officers first make a visual observation of the speed of the violator, than confirm the speed with RADAR/LIDAR. The gun only emits a signal when activated and does not always emit the signal.

Long story short..slow down before the top of the hill and watch those known spots that Officers observe traffic.

Remeber that the Supreme court of Pennsylvania in 1906 affimed the conviction under a city ordinance of speeding over 7 mph.
the court said "It is only necessary to resort to the most cursory observation to find the evidence that many drivers of automobiles in their desire to put their novel and rapid machines to a test of their capacity, drive such vehicles through the streets with a reckless disregard of the rights of others". (Brazier v. City of Philadelphia 215 Pa. 297, 64 A 508, 510 (1906) That was for Jamo

Have a nice day

Todd

Whaler · #31 (**permalink**) 04-23-2003, 09:11 PM

I have seen those........the "Romulan Cloaking device"

Enzo sells them at Finishline

LOL

Tim

Hell wouldn't u love to just outrun one?......ahhhhhhhh maybe not

Turk · #32 (**permalink**) 04-23-2003, 09:53 PM

A few years ago, fellow Ham Radio Operators were succesfully building and operating radar jammers.
They were improved upon to be able to dial in the speed you wanted indicated on the radr gun. This is going back about 10 years or so.
They would be compatible with the speed recording technology of that day. I doubt it they would work with the current generation of Radars and lasers etc..

I also believe one of the more enterprising Hams went into commercial production with his little black box. Aplicable laws then allowed for the ham to experiment, but not to sell it commercially.
I believe they sold many , and either the laws were changed by FCC, or the technology left him behind.

TURK

ls1ac · #33 (**permalink**) 04-24-2003, 04:27 AM

The ham unit worked on 10.525 the X band that they can use. The unit was a daisy chain re transmitter. Not so on K and Ka not in their bands.
KB9MHI

ls1ac · #34 (**permalink**) 04-24-2003, 04:31 AM

To review a testing service check out www.speedzones.com

shaps · #35 (**permalink**) 04-24-2003, 06:08 AM

Would have to agree on the effectiveness and sensitivity of the Valentine.. Have had it upgraded once, yes pricey but has saved my neck more than a couple of times. That said, have found it COMPLETELY USELESS vs laser. (not that i expected to react faster than the speed of light) Turk, had the same experience, lights flashing, etc....

As far as the license plate covers, saw one of those investigative journalism shows here in NY. They tried the spray and 2 different covers with absolutely no effect on the ability to take a clear picture of the plate.... Guess they keep the plate clean , tho..

CSX 4039 · #36 (**permalink**) 04-24-2003, 07:12 AM

Quote:

Originally posted by todd

Steve,
You are right about the color of paint, as a white car reflects the most amount of light rays in the light spectrum, a flat black car absorbs the most amount of light. According to the LIDAR training manual, this will not affect the accuracy, however could slightly reduce the range.

So, in theory:

Black Hyundai top speed 85
Brushed Aluminum unpainted Cobra 427 S/C top speed 145 mph.

In reality:

Black Hyundai top speed 85 mph
Brushed aluminum unpainted Cobra 427 S/C top speed 70 mph.

NROTOXIN · #37 (**permalink**) 04-24-2003, 08:57 AM

Check out this GIZMO
http://www.technoscout.com/general/p...Prod_Name=Pha/

curtis

RallySnake · #38 (**permalink**) 04-24-2003, 09:25 AM

Yeah,

Check Rocky Mountain Radar out if you want to buy an empty plastic box and an empty promise. See my previous post.

If you want something that works, buy a Valentine one and one of these: http://www.radar-guys.com/bel/bel904.htm They will cover you on secondary roads and highways (where forward facing radar is the order of the day) and around town (where motorcycle cops shoot with hand held radar or laser).

They will not help much on California freeways, though. Here, the officer will follow you and record your speed with a calibrated speedometer. The only defense here is 20/15 vision and a mirror that doesn't vibrate too much.

Paul

Russ Dickey · #39 (**permalink**) 04-24-2003, 10:24 AM

Let's get down to the real fun stuff, though. How many of you have had the brass balls to try a little Dukes of Hazzard action, and give Ol' Sherrif Roscoe a run for his money? I've always wanted to hear some stories about being chased by the man while driving a 427 Cobra....

More realistically, it seems like it should be fairly easy to get out of a ticket when driving a Cobra. I'm the only male in my family who isn't a policeman, so I end up hanging out with coppers quite a bit. Most of the officers I run into are car guys, and enjoy BS'ing about hot rods and classic cars.

For example, in the past 5 years, I have been pulled over 9 times in my '66 Mustang, and 3 times in my daily driver F-150. Each time in the Mustang, the officer complimented me on my car, and told me some story about his experiences with an old Stang or muscle car. I let him embellish a bit, and sure enough, each time I have driven off with a warning.

Each time in the F-150 resulted in a ticket.

Russ

P.S. By way of comparison, my wife has been pulled over 3 times in the past year while driving her modified '96 Mustang GT, and each time driven away with a warning. The cops around KC just must love Mustangs. Or maybe it was her big boobs...

RallySnake · #40 (**permalink**) 04-24-2003, 11:47 AM

Russ,

There are topics that you can NOT talk about on this forum. Some things can get one in TOO much trouble!

Paul