Tuesday, August 03, 2010

Laser Diode Laser Jammers: Is There Any Merit to the Marketing Hype Surrounding Them?


"High-Powered" Laser Diode Jammers

Updated: 23 Apr 14, By Veil Guy

  • I've been told by a Laser Interceptor rep, that the LIs are "eye safe," and that Radar Roy's article suggesting otherwise, contained inaccuracies.
  • Laser Interceptor has come to a settlement with the holder of the US Patent for look-up table laser jammers, Blinder. LI is the first and only company to my knowledge to have actually have done this. As such, I expect to review a model sometime in the future.


Today I received an email marketing blast from Radar Roy concerning his "review" of a product that he markets, called the Laser Interceptor.

Roy touts in his article that the main advantage to the Laser Interceptor over (what is implied to be) lesser-performing and more "conventional" and "lower-powered" LED-based laser jammers—such as those produced by Blinder and Escort—is that the Laser Interceptor employs "high-power" laser-diodes to effectively jam all police laser guns.

While this notion on the surface sounds compelling, if one takes a little time to understand how a police laser gun and modern-day laser jammer works, one would realize that the performance of any given laser jammer is not really just a matter of power, it is a matter of accurate timing. This complex mechanism is described in greater detail by the domestic and international patent holder of the underlying technology, Blinder, who's headquartered in Denmark.

A laser jammer's primary function is to transmit pulses of IR light in a manner which destructively interferes with the pulse-train of the police laser gun that is being triggered. A laser jammer must quickly determine the actual pulse rate being transmitted by the laser gun and then counter with the illumination of its own destructive pulse-train to render the laser gun unable to obtain a speed reading (again, as described in Blinder's patents).

While power certainly can play a role, to a degree, in this mechanism, it is not the overriding force which ultimately determines the overall laser jamming effectiveness.

At some point, using more "illuminating" power does not and will not improve performance as other more important factors come into play. In other words, more is not always better.

Furthermore (and what is not understood by the vast majority of consumers or reviewers of laser jammers): police laser guns use magnifying elements in their transmission and reception sections to significantly amplify their weak transmission signals.

This is extremely important to understand because what this means in reality is that the difference in output of either an array of multiple LEDs or a single laser-diode is to a large degree negated and less relevant to the effectiveness of any given laser jammer, regardless of the mode employed in its design (LED Array or Laser-Diode). The timings and other design-elements (such as beam-divergence) are far more important.


In other words, the hype surrounding "high-power" laser jammers is bogus marketing-speak, used to sell very expensive laser jammers. This process is referred to as manufacturing demand (a MUST SEE video). Another industry that employs this marketing tactic (with impunity) is the bottled water industry.

However, since Radar Roy's review primarily focused on the "high-power" of one particular laser-diode-based laser jammer as being a most important factor, I would like to offer this perspective on laser diodes as an illuminating source of laser jammers as compared to an array of multiple LEDs.

As someone who has zero financial interest/stake in any of these laser jammer companies, for my money, I wouldn't focus on the particulars of the individual components used in the construction of a laser jammer for making a selling (or purchasing) decision.

In the final analysis what matters is the actual performance of the laser jammer in the real-world of everyday driving and not what was used internally to achieve that performance.

Historically, there have been both good performing and poor performing laser jammers of each kind (LED Array and Single Laser-Diode), further demonstrating this point.

Incidentally, the most advanced development of illumination sources today are...LEDs.

They showing up everywhere from the latest designs of flat-panel TVs to automotive lighting and interior lighting for very good reasons—they're inexpensive, very effective illuminators, cool-burning, and provide extreme reliability & longevity while consuming very little power.

The same is true for "Laser"/IR-illuminating LEDs.

"High-Powered" Laser Diode Jammers

With respect to the health concerns Radar Roy raised in his article, consumer products that pose a threat of permanent eye-sight damage, I suspect, won't be permitted to stay on the market for very long, once the FDA/OSHA gets wind of the health-risks that Roy goes to great length to point out.

Have you ever noticed the internals of a consumer CD or DVD player? If not, examine one. You'll see that its optical reading device is thoroughly protected to not permit direct viewing as a means of protecting one's eyesight. I suspect the power output of that device is quite a bit less than those of devices that are used to illuminate hundreds or thousands of feet away.

I can't help but think of a similar circumstance that Roy was personally involved with which resulted in the pressuring of a certain particular "jammer" manufacturer to take their products off the market.

That company was Rocky Mountain Radar. It was only after of his (and others) relentless lobbying efforts to the FCC about RMR's products, did the FCC finally take notice of the fact that RMR's was flagrantly violating their regulations and hence RMR was subject to very steep fines and other consequences, a company that could be considered by some as a "competitor" to Roy's Radar Busters, at the time.

That's when things changed dramatically for them (and the consumer), which incidentally, was a good thing, not because they were in violation of federal regulations, but because they were completely ineffective in jamming anything, despite years of their wild marketing claims to the contrary.

And this was simply because their little boxes were considered to be potentially interfering with other radio transmissions, a relatively harmless matter as compared to that of the emissions of a "very high-power" laser-diode device which, according to Radar Roy, can present a very real long-term health threat to eye-safety—as he stated in his article, 'irreversible eye damage.'

(What!?! 'Irreversible eye damage...while connected to a power supply', as they would be in general operation?) Let me see, risk versus reward?
  • Why wouldn't any company producing or selling such consumer products which, according to Roy, may be in violation of federal regulations/laws/guidelines not be subject to the same kind of scrutiny and/or enforcement/financial penalties that RMR and its dealers/distributors ultimately were?
  • Wouldn't companies performing professional installations of such devices be subject to OSHA regulations concerning their employee's eye-safety? Particularly when installers will routinely and repeatedly be in very close contact with the laser jamming heads as they perform their installations?
  • Why wouldn't the consumer (operator) of such devices not be subject to the very same kinds of legal consequences for knowingly violating specific federal regulations (especially those that have adverse health implications) as someone who would operate, say, an active or passive radar jamming device (which has little or no adverse health implications)?
While Radar Roy sure makes this particular laser-diode device sound very compelling (notice the irony?), until such questions like those above are sufficiently answered, the smart play, in my personal opinion, may be to simply stick with proven, safe, and "legal-to-use" LED devices from long-established and respected manufacturers such as those from Blinder and Escort.

The fact that these other products are considerably less expensive at doing the very same job—in the real-world—is a nice bonus, especially when one considers our tough economic times.

Happy and Safe Motoring!

Further References:

Veil Guy

Wednesday, April 07, 2010

An Unconventional But Very Useful Feature of Certain Radar Detectors

Unconventional But Useful Feature of Certain Radar Detectors

Updated: 23 Apr 14, By Veil Guy

A couple of days ago I was driving my Bimmer to the office and I noticed an illuminated electrical fault indicator on my dash.

Figuring the possibility of an eventual stall and subsequent inability to re-start my car, I immediately turned around, drove home, and selected another vehicle.

After sitting in my driveway for a day, I contacted Craig Peterson of RadarTest—someone with whom I regard as having a strong knowledge of the intricacies of automobiles—and described my situation to him. Since I didn't know the source of my electrical problem—being the battery or the alternator—Craig suggested that I purchase a 12 volt meter at store like Radio Shack to test the battery output when the car was turned-off and then when it was running. Depending upon the two measurements, I could fathom where the fault lay.

Since I didn't have one in my possession, I waited another couple of days when I had the time to run-out to the store and purchase one. That is, until a novel thought occurred to me one evening.

My epiphany came when I remembered that certain radar detectors, including the extreme performing Escort Redline, had the ability to display the current voltage output of the vehicle while plugged in, a capability with which I historically didn't see the value...that is until this moment.

I called Craig back and shared my idea with him. Even though Craig knows a thing or two about detectors, the thought had never occurred to him to use a radar detector that way. Needless to say, he thought it was an ingenious idea.

Armed with an Escort Redline in hand, I got into my vehicle and powered on the electronics without starting the vehicle, plugged in the Redline and set the display mode to voltage output to see what was the underlying capacity of the battery. The reading was 12.3 volts which was on the low side and consistent with the little colored indicator on the battery (that it was partially discharged).

I then started the vehicle. Almost immediately the voltage dropped to 11.4 volts. Craig immediately suggested that my alternator was shot. Based upon these results, I knew that I wouldn't be able to complete my trip to the BMW dealer which was a 30 minute drive away.

Having spoken to the dealer, I asked what was the lowest value of the voltage output of the battery/electrical system running that I could sustain before encountering severe drivability problems. The service tech suggested 11.0 volts.

The next thing I was did was to take another vehicle and began charging my Bimmer's battery with the use of jumper cables all the while using the Escort Redline as my real-time volt-meter.

After a couple of charges lasting lasting about 20-30 minutes each at an elevated RPM, I was able to get my battery voltage raised to 13.5 volts.

Having sufficiently charged my battery, I set off to the dealer with my wife following in her vehicle in the event my voltage dropped to the point that I needed another charge along the way.

To maximize my running time, I turned off every electrical device in my vehicle, except one essential one—my Escort Redline. Once again, the Redline came in handy as I was able to use it to indicate in real-time what my voltage levels were throughout the duration of my trip.

It started at 12.5V and over the next 30 minutes fell to 12.3V then to 12.1V, followed by 11.9V and finally 11.7V when I was about two miles from the dealer. As it turned out, I had about 0.7V left over.

So, the moral of the story is: if you ever find yourself in a similar situation and your radar detector has the capability to display voltage, you can use it to safely get to your destination using the same procedure. It was a good thing too, as the Redline saved me about $150 in flatbed towing charges!

Happy and safe motoring!

Tuesday, March 02, 2010

Whistler Pro-68SE Review: Whistler's Economic Stimulus Package


Whistler Pro-68SE: Latest High Value/High Performing Radar Detector from Whistler

Updated: 23 Apr 14, By Veil Guy

For the 2010 driving season, Whistler continues in its tradition of offering honest high performance radar detectors—to drivers on a budget—with the introduction of their new model, the Whistler Pro-68SE.

For those of you already familiar with Whistler's SE models which appeared last year (see: XTR-690SE, XTR-695SE, PRO-78SE review), the Whistler Pro-68SE sports the same improved case as these higher-end models, provides a slightly lower feature-set, and the identical performance of their revered Whistler Pro-78 Rev C (review).

The Whistler Pro-68SE provides a simplified display screen that is divided into two regions, the left containing display icons of band identification (the same as the earlier model Whistler Pro-68) coupled with the right side which consists of a blue LED indication of a numeric signal strength and reception mode (ie; City, Highway). Unlike the Pro-68SE's more expensive siblings, this budget-priced radar detector does not include voice modes or selectable alert-tone configurations.

The Pro 68SE also does not provide the Ka Max mode feature available on these other higher-end and consequently more expensive radar detectors, but like the Pro 78 Rev C, Ka reception performance does improve when POP detection mode is turned off.

Of course, this model does retain the extremely quick-responsive nature to brief appearances of radar that are common in QT (quick triggered instant-on radar) and reflected radar of longer duration instant-on or constant-on use that routinely occurs while your vehicle is in motion while not excessively "falsing" as a consequence and provides a variety of filter-modes to further fine-tune this delicate balance between quickness/sensitivity and selectivity.

Furthermore, Whistler continues to provide detectors which provide superior conveyance of approaching instant-on threats and accurate proximity warnings to unseen police radar threats, as well as a more useful "trailing-alert" duration when police radar is no longer actually present—features that I consider essential in any good radar detector design and something that really is only matched by the mighty Valentine One, the legendary radar detector retailing at $399.

Although this new model is based upon the existing Pro-78 Rev C, it's laser detection sensor is more sensitive, since it comes from the newer 690SE/695SE/Pro-78SE models of last year.

Retailing at $169USD, its street price will be somewhat lower, making this new Whistler one of the great radar detector values. I will provide a more comprehensive evaluation when they begin shipping in mid-March.

For those seeking a terrific performing radar detector, but who are on a tighter budget (aren't we all?), this new radar detector is a most compelling driver's companion—think of this new model as Whistler's economic stimulus package.

Happy and safe motoring!

Further reading (online discussion):

Pro68SE discussion

Veil Guy